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Ninja - DoubleStack XL 10 QT, 6-in-1, 2-Basket Air Fryer, Space Saving Design - Gray

Model: SL401
SKU: 6584906
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About This Item

Meet the Ninja DoubleStack XL 2-Basket Air Fryer, the only stacked 2-basket air fryer that can cook up to 4 foods at once. Designed for efficiency, versatility, and easier family-sized meals, Ninja’s stacked 10-QT design maximizes counter space while giving you the power and capacity of 2 air fryers in the footprint of 1. Only Ninja has DoubleStack Air Frying technology that delivers the optimal air flow and even heat required to cook 4 foods at once for crispy, golden perfection every time. Simply load your veggies onto the crisper plate, insert the stacked meal rack into the basket, and place your proteins on top to cook 2 different foods in one basket. Two 5-QT baskets allow you to simultaneously prepare different dishes, making multi-tasking in the kitchen a breeze. Cook more food in a smaller footprint—easily fits two 5-lb chickens or 5 lbs of wings in each drawer. Perfect for smaller kitchens, enjoy delicious homemade meals while keeping your counter tops clear of clutter. * vs NINJA AF080 (power) and CHEFMAN 5QT Air Fryer
  • Key Specs
    • Care And Cleaning Instructions: Dishwasher-safe parts, Hand wash
    • Basket Capacity: 5 quarts
    • Function(s): Air fry, Broil, Roast, Bake, Reheat, Dehydrate
    • Fryer Type: Air (Deep fryers cook foods by completely submerging them into hot oil. Air fryers act as convection ovens and circulate heated air to cook foods. Deep fryers can handle larger batches and typically cook foods faster, while air fryers use significantly less or even no oil to cook foods.)
    • Programmable: true
    • Basket Design: Single, Dual (The physical configuration or functional design of the basket(s) of the product.)
  • General
    • Brand: Ninja
    • Model Number: SL401
    • Product Name: DoubleStack XL 10 QT, 6-in-1, 2-Basket Air Fryer, Space Saving Design
    • Color: Gray
  • Dimensions
    • Product Height: 15.14 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 11.25 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 19.22 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
    • Product Weight: 23.15 pounds (The out of box weight of the item.)
  • Material
    • Care And Cleaning Instructions: Dishwasher-safe parts, Hand wash
    • Body Material: Plastic, Metal
    • BPA-Free: true (Plastic that is free of the chemical bisphenol A.)
    • Basket Material: Nonstick Basket
    • Chemical Disclosures: This product contains aluminum, stainless steel ingredients (chromium, manganese, nickel, phosphorous). For more information about chemicals in this product, visit https://res.cloudinary.com/sharkninja-na/image/upload/v1762888614/PFAS_Data_list_102025.pdf (The disclosure of Per- and Polyfluorinated Substances (PFAS) and/or other chemicals.)
  • Capacity
    • Basket Capacity: 5 quarts
  • Functions
    • Function(s): Air fry, Broil, Roast, Bake, Reheat, Dehydrate
  • Features
    • Fryer Type: Air (Deep fryers cook foods by completely submerging them into hot oil. Air fryers act as convection ovens and circulate heated air to cook foods. Deep fryers can handle larger batches and typically cook foods faster, while air fryers use significantly less or even no oil to cook foods.)
    • Programmable: true
    • Basket Design: Single, Dual (The physical configuration or functional design of the basket(s) of the product.)
    • Control Type: Dial, Button
  • Performance
    • Maximum Temperature: 450 degrees fahrenheit
  • Power
    • Voltage: 120 volts (Amount of power needed to support an electrical current.)
    • Wattage: 1690 watts (Measurement of electrical power.)
  • Certifications Listings & Approvals
    • Product Safety Certifications and Standard(s): UL Listed (Lists the applicable certifications and/or standards, as stated by the manufacturer, in which the product has met the requirements for the assurance of quality and safety.)
  • Warranty
    • Warranty - Parts: 1 year limited
    • Warranty - Labor: 1 year limited
  • Other
    • UPC: 622356631211

Meet the Ninja DoubleStack XL 2-Basket Air Fryer, the only stacked 2-basket air fryer that can cook up to 4 foods at once. Designed for efficiency, versatility, and easier family-sized meals, Ninja’s stacked 10-QT design maximizes counter space while giving you the power and capacity of 2 air fryers in the footprint of 1. Only Ninja has DoubleStack Air Frying technology that delivers the optimal air flow and even heat required to cook 4 foods at once for crispy, golden perfection every time. Simply load your veggies onto the crisper plate, insert the stacked meal rack into the basket, and place your proteins on top to cook 2 different foods in one basket. Two 5-QT baskets allow you to simultaneously prepare different dishes, making multi-tasking in the kitchen a breeze. Cook more food in a smaller footprint—easily fits two 5-lb chickens or 5 lbs of wings in each drawer. Perfect for smaller kitchens, enjoy delicious homemade meals while keeping your counter tops clear of clutter. * vs NINJA AF080 (power) and CHEFMAN 5QT Air Fryer

  • Space Saving Design: Ninja’s stacked design lets you cook double the food in nearly half the space and still fits under standard cabinets. Plus, it’s 40% slimmer than your traditional 2-basket air fryers
  • Doublestack Air Frying Technology: Only Ninja’s stacked design has 2 independently controlled baskets so you can cook 4 foods at once
  • Cook 4 Foods With Stacked Meal Racks: Includes 2 removable stacked meal racks allowing you to cook on 2 levels per basket. Superheated air surrounds both foods in each basket for an all-around crisp.
  • Smart Finish & Match Cook: Choose between the Smart Finish feature, which unlocks cooking 2 foods 2 ways that finish at the same time, and the Match Cook feature, which easily copies settings across zones for full 10-qt. Capacity meals.
  • Xl Family-Sized Capacity: 10 QT capacity lets you cook two, 5-lb chickens at once and can feed up to 8 people.
  • 6-In-1 Functionality: Includes 6 versatile cooking programs: Air Fry, Air Broil, Roast, Bake, Reheat, and Dehydrate.
  • Less Fat: Up to 75% less fat than traditional air frying methods. Tested against hand-cut, deep-fried French fries.
  • Faster Cooking: Cook 2 meals faster than any other air fryer for family dinners in a flash
  • Easy Cleaning: Easy-to-clean baskets and dishwasher-safe crisper plates.
  • What's Included: doublestack Air Fryer, (2) 5 Quart Baskets, (2) Nonstick Crisper Plates, (2) Stacked Meal Racks, 20 Recipes, Additional Meal Options & Cooking Charts.
Whats Included
  • Ninja DoubleStack Air Fryer
  • (2) 5-qt Baskets
  • (2) Nonstick Crisper Plates
  • (2) Stacked Meal Racks
  • 20 Recipes
  • Additional Meal Options & Cooking Charts

Q: How much slimmer is this air fryer compared to traditional 2-basket models?

A: This air fryer is 40% slimmer than traditional 2-basket air fryers.

Q: How many cooking functions does the air fryer have?

A: This air fryer has 6 versatile cooking programs: Air Fry, Air Broil, Roast, Bake, Reheat, and Dehydrate.

Q: Can I cook a whole chicken in this air fryer?

A: Yes, the 10-quart capacity allows you to cook two 5-pound chickens at once.

Q: Why is this air fryer called 'DoubleStack'?

A: It's called DoubleStack because it has 2 independently controlled baskets stacked on top of each other.

Q: What is the total capacity of this air fryer?

A: This air fryer has a total capacity of 10 quarts.

Q: Does this air fryer allow for cooking different foods at the same time?

A: Yes, it has a Smart Finish feature that allows you to cook 2 foods 2 ways that finish at the same time.

Q: Are the parts of the air fryer dishwasher safe?

A: Yes, the crisper plates are dishwasher safe, making for easy cleaning.

Q: Does the Nina double stack air fryer have a manufacturer warranty

A: Yes, the Ninja Double Stack Air Fryer does include a manufacturer’s warranty. Like all Ninja air fryers, it comes with a 1‑year limited warranty that covers defects in materials and workmanship under normal household use.

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Reviews

Customers are sayingCustomers express satisfaction with the product's ease of use, generous capacity, and efficient cooking performance, which allows them to prepare multiple items simultaneously. They also appreciate its slim, space-saving design and the crispness it imparts to food. However, a common concern raised by users is the appliance's noise level during operation.
This summary was generated by AI based on customer reviews.
  • Ease of use (27)
  • Capacity (23)
  • Size (17)
  • Cooking Performance (14)
  • Design (12)
  • Noise Level (4)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Good purchase

    Easy to clean and use, can have different food cooking simultaneously, very spacious and efficient. Saves counter space.

    Posted by GiovannyV

  • Rated 5 out of 5 stars

    Ninja Double Stack XL

    Beautiful and very compact machine. It comes with a detailed instruction guide.

    Posted by Miguel

  • Rated 4 out of 5 stars

    Great Design with Great Features

    With an all new vertical design, the Ninja Doublestack XL fryer allows you to cook up to 4 foods at once in a form factor that is much more narrow than comparable sized fryers. It has 10QT capacity, using individual 5QT baskets, that can be configured with removable grill spacers that allow you to divide foods between top and bottom or remove the grill spacer and use the entire 5QT basket for one food, like a traditional fryer. The design is nice, but it’s mostly plastic on the outside. The vertical basket placement is great and they slide in and out with ease. The control settings have a very nice digital display off the right hand side of the unit. You have a large and bright LCD display for time and temp and readout, along with a nice jog dial selector control. The vent fans on this one are also out the right side, not the back. For our kitchen, this works out great due to where we placed the fryer on our counter, but just be aware if that might cause an issue. It fits nicely under standard cabinets and is not too heavy if you need to move it around. One thing we do notice that I’m guessing is due to the type of plastic design of the unit, it gets very hot to touch pretty much all around the outside, and it also seems louder than other comparable fryers we’ve tried, not much insulation for temp or sound is found here. Also, while cleaning the fryer before our first use, the solder of one of the grill spacer handles broke, not a good look before we even cook something… The Doublestack does a lot. Air Fryer is just one of 6 settings that thing claims to do, including bake, broil, roast reheat and dehydrate. We’ve not tried them all, and Air Fry is probably where you’ll use it the most, but it does have the stated capability to much more. I would also assume, based on our usage so far, that a similar trial and error learning curve will be found across all the different settings. In terms of Air Frying, it’s just fine. Easy and right to the point. We had some trial and error with time and temp based on different foods, since the vertical design splits your food into 5QT portions, and if you use the grill spacers, that adds a new wrinkle related to how long you cook the food. The one benefit that we were able to see right away, is the feature of the grill spacers that when used, that cooks the food to an extra crispy style. So it’s great for those foods that need that extra crisp, that might be hard to get in other fryers. However using both baskets and both grill spacers for multiple types of food, means you will more than likely play around with the time and temp for a bit, until you’re comfortable that the food you’re cooking comes out the way you like. I noticed this more on the Bake setting myself. Using Bake settings similar to a standard oven didn’t work for any of the food we tried, so lots of adjustments were needed. But once you get the hang of adjusting the time and temp relative to what you’re cooking, it works great. One of the great features of the Doublestack is the Match Cook setting. Basically set different foods with different time and temps in either basket, and the Ninja will make sure that both are done at the same time, sort of a set it and forget it feature. No more hurrying to get one food out and wait on the other. Another great feature we love is that when the cooking is done, it actively goes into a cool down mode, where the vent fans kick into overdrive a little bit and work to cool down the fryer and not just let all that exess heat stay and build up. Cleaning is easy, as both baskets and the grill spacers are dishwasher safe, and they all have non stick coatings that allow even hand washing to be a snap, food doesn’t stick and wipes right off. Overall, the main feature here is the space saving design, along with the various cooking options this allows. it makes the case to be left out on the counter as an all around go to for quick, easy cooking with fast clean up. It has some great features built in, but nothing revolutionary here, just a great solid product from the Ninja brand.

    Posted by HarvickFan

  • Rated 4 out of 5 stars

    Solid Air Fryer, but not 100% Premium

    The Ninja DoubleStack XL Air Fryer is a top contender for anyone looking to enhance their kitchen with a high-end air fryer that doesn’t hog a whole kitchen countertop. Here’s what I like about it… Pros: 1. No Preheating Needed: This air fryer lets you start cooking immediately without needing to preheat. It’s great to put food in and get started right away, making meal prep faster and more convenient. This is already a big improvement over my Ninja indoor grill, which forces me to preheat for every function I set it to. 2. Large Capacity: The 10-quart capacity, divided into two 5-quart baskets, is perfect for most family-sized portions. The dual-basket design allows you to cook different dishes simultaneously, saving time and making it easier to prepare diverse meals. The included metal divider trays for each basket allow you to cook 4 different foods at once, which I tried, and was pretty satisfied with. Just keep in mind – if the foods share a basket, they need to have very similar cook/reheat times. 3. Excellent Cooking Performance: This machine consistently delivers crispy and delicious results. When reheating pizza or air frying potatoes, it provides a crispy layer and an extra crispy layer in the same basket. This was a joy to test, especially since my family has preferences about the crispiness of their reheated foods. It also excels at cooking salmon and zucchini fries to perfection. I have some photos attached to this review as well for anyone interested in seeing the results. 4. Multi-Level Cooking: The inclusion of two trays per basket allows for better air circulation, ensuring even cooking across different levels. This is particularly useful for achieving that perfect crispy exterior on various foods – and I tend to enjoy my foods being extra crispy. Some foods, like zucchini fries, tend to cook and taste better on the top tray of a given basket. 5. Multiple Cooking Functions: The Smart Finish and Match Cook functions work excellently, allowing synchronized cooking times for different dishes. These features save time and simplify meal preparation, making cooking more efficient. It’ll take a while to get used to the names of each function though, so with that in mind… Cons: 1. User Navigation: The user interface could be more intuitive. As a first-time user, I found myself fumbling around trying to figure out how to operate each basket correctly. The dial doesn’t function as a multi-select tool, which can be confusing and less user-friendly. 2. Button Quality: The plastic overlay on the buttons detracts from the premium feel expected from Ninja. Solid, tactile buttons would enhance the user experience significantly. High-end products should have a premium aesthetic and feel, and this includes the buttons and overall user interface. 3. Learning Curve: There is a noticeable learning curve associated with the various functions and settings. Keeping the first-time use instructions handy is recommended until you become familiar with the machine’s controls. Conclusion: The Ninja DoubleStack XL 2 Basket Multi Rack Air Fryer is a versatile and efficient appliance that excels in performance. Its space-saving design and the ability to cook multiple dishes simultaneously make it a valuable addition to any kitchen. However, improvements in the user interface and button quality would enhance its overall usability and premium feel. Despite these minor drawbacks, the air fryer delivers on its promise of crispy, delicious results and is a worthwhile investment for busy households. I’m happy with it’s ability to prepare fresh meals and plan to get plenty of mileage out of it – I just hope the plastic overlay on the buttons will hold up and not crack or break over time.

    Posted by Curtis

  • Rated 5 out of 5 stars

    Increased Overall Size, but Smaller Baskets

    TLDR: The DoubleStack offers advantages over the normal XL models, but the normal XL models have more accommodating baskets, allowing larger portions of food to be cooked in each one. INTRODUCTION My Ninja Air Fryers are a staple in the household. They are versatile, easy to use, and most importantly, easy to clean up afterwards. During a 5-day work week, the Ninjas get used at least 2 of those days and when I’m not using the air fryer, I am probably using the Ninja Woodfire grill. Like I said, my Ninjas get used heavily by us. The DoubleStack XL is a new twist on the dual air fryer. Instead of placing identical baskets side by side and keeping the overhead heating elements, Ninja redesigned the machine, stacking baskets on top of each other and moving the fans and heating elements to the rear. Ninja touts the space-saving design of this layout and while it is true that this saves horizontal counter space, the DoubleStack still takes up a good amount of real estate, they are just trading horizontal real estate for vertical. The DoubleStack XL sports a generous 10qt capacity, easily besting my single basket XL’s capacity of 6.5qts. Unfortunately, while overall volume has increased, having 2 baskets means each basket’s capacity drops to 5qts, substantially smaller than the 6.5qt basket and making some things challenging to fit in at one time, in one basket. To make up for this, Ninja has come up with a clever dual level basket design. A traditional, perforated plate sits on the bottom on the basket, elevating the bottom level off the floor. A wire rack can then be dropped into the basket, allowing for another level of cooking. It’s a slick idea and allows for cooking up to 4 different things all at once. Ninja also thought ahead realizing cooking up to 4 different things, all at the same time, could be a pain logistically. In their wisdom, Ninja set the DoubleStack up to take out the guesswork and stress. Cooking the exact same thing in both baskets? No problem. Use the Match Cook button. It cooks both baskets the same. Cooking 2 different meals in the baskets? No problem. Click the Smart Finish button, set your cooking time and temps and the Ninja will make sure everything gets done at the same time. It’s simple. It’s intuitive. It’s logical. Kudos Ninja!! USE I was a bit skeptical when I first looked at the new design. Why mess with something that has proven solid for Ninja and countless others? Moving the cooking elements to the back, exhausting out the right side seemed illogical. The main selling points of having an overhead cooking configuration is that all the items in the basket get even heat distribution. Heat gets blown down on all items uniformly, I don’t see how it would be possible with all the items in the DoubleStack being in the back. Surely, the items in the back of the basket will get cooked much more than those at the front and furthest away from the heating elements. To test this theory out, I wanted to start with cooking something not as forgiving as a burger or steaks. I decided on asparagus along with some blackened salmon. I will admit, whatever Ninja did during the design phase paid off. The DoubleStack cooked all the salmon filets evenly and uniformly. The filet closest to the back were no more cooked than the filet at the very front. I was quite surprised at the uniformity. CONCLUSION To date, I have made close to a dozen different foods in the new DoubleStack XL. All the kudos I’ve given to my other Ninja products applies to the DoubleStack. Food cooks evenly and quickly. The new design that I was skeptical about before use, has won me over. Regardless of what protein I’m cooking, what vegetable I’m cooking, or what meal I’m preparing together in one basket, the DoubleStack has performed flawlessly. The only nit pick is that due to the smaller basket volume, I find myself using both baskets to cook a full meal versus what I would normally be able to get away with just one in my normal XL. However, the ability to double stack food in the DoubleStack is a game changer in this household. Being able to put vegetables under your protein in the same basket and have them both turn out exceptionally well, is great. The versatility of the DoubleStack XL has cut back on the amount this family uses the cooktop and microwave during meal prep. Parts of the meals we would normally cook separate from the air fryer can now be included during cooking. Way to go Ninja. Another home run, in my opinion. HIGHLY RECOMMENDED

    Posted by NAMO

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Pros for Ninja - DoubleStack XL 10 QT, 6-in-1, 2-Basket Air Fryer, Space Saving Design - Gray
Ease of use, Capacity, Size, Cooking Performance, DesignEase of Use, Overall Performance, Capacity, Cooking Performance, SizeEase of use, Size, Capacity, Cooking Performance, Overall PerformanceOverall Performance, Ease of Use, Cooking Performance, Capacity, Size
Cons for Ninja - DoubleStack XL 10 QT, 6-in-1, 2-Basket Air Fryer, Space Saving Design - Gray
Noise LevelNoise Level, Button Responsiveness, Door OperationNoise Level, Controls, DesignNoise Level, Basket Design, Smell

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