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Ninja - Smart DoubleStack XL 2-Basket Air Fryer with Leave-in Thermometer, 10 QT, 6-in-1 Smart Cook System, Space Saving Design - Deep Gray

Model: SL451
SKU: 6589085
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About This Item

Meet the Ninja DoubleStack XL Smart 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. Also included is Ninja’s Smart Cook System. Ninja's Smart Cook System allows you to achieve the perfect doneness at the touch of a button with the integrated Foodi Smart Thermometer—no guesswork required. 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 countertops 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: SL451
    • Product Name: Smart DoubleStack XL 2-Basket Air Fryer with Leave-in Thermometer, 10 QT, 6-in-1 Smart Cook System, Space Saving Design
    • Color: Deep 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: 26.46 pounds (The out of box weight of the item.)
  • Material
    • Care And Cleaning Instructions: Dishwasher-safe parts, Hand wash
    • 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
  • 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: 622356631228

Meet the Ninja DoubleStack XL Smart 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. Also included is Ninja’s Smart Cook System. Ninja's Smart Cook System allows you to achieve the perfect doneness at the touch of a button with the integrated Foodi Smart Thermometer—no guesswork required. 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 countertops 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.
  • Smart Cook System: Achieve the perfect doneness, from rare to well-done, at the touch of a button with the integrated Foodi Smart Thermometer—no guesswork required.
  • 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.
  • What's Included: Ninja doublestack Air Fryer, (2) 5 Quart Baskets, (2) Nonstick Crisper Plates, (2) Stacked Meal Racks, Ninja Foodi Smart Thermometer, 9 Recipes, Additional Meal Options & Cooking Charts.
  • 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.
  • Smart Cook System: Achieve the perfect doneness, from rare to well-done, at the touch of a button with the integrated Foodi Smart Thermometer—no guesswork required.
  • 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.
  • What's Included: Ninja doublestack Air Fryer, (2) 5 Quart Baskets, (2) Nonstick Crisper Plates, (2) Stacked Meal Racks, Ninja Foodi Smart Thermometer, 9 Recipes, Additional Meal Options & Cooking Charts.
Whats Included
  • Ninja DoubleStack Air Fryer
  • (2) 5-qt Baskets
  • (2) Nonstick Crisper Plates
  • (2) Stacked Meal Racks
  • Ninja Foodi Smart Thermometer
  • 9 recipes
  • Additional Meal Options & Cooking Charts
  • Ninja DoubleStack Air Fryer
  • (2) 5-qt Baskets
  • (2) Nonstick Crisper Plates
  • (2) Stacked Meal Racks
  • Ninja Foodi Smart Thermometer
  • 9 recipes
  • Additional Meal Options & Cooking Charts

Q: How many foods can the air fryer cook at once?

A: The Ninja DoubleStack XL Smart 2-Basket Air Fryer can cook up to four foods at once.

Q: What is the capacity of each basket?

A: The capacity of each basket is 5 quarts.

Q: Are the baskets dishwasher-safe?

A: Some parts of the air fryer are dishwasher-safe.

Q: What is the maximum temperature the air fryer can reach?

A: The maximum temperature the air fryer can reach is 450 degrees Fahrenheit.

Q: Can you use the air fryer to cook different foods in each basket simultaneously?

A: This air fryer has two baskets that allow you to simultaneously prepare different dishes.

Q: Does the thermometer work with the match cook feature? Say i'm frying chicken in both baskets. Can I put the thermometer in one basket's chicken, and then set it to match cook so both baskets finish at the same time?

A: Yes, to use Match Cook with the probe, set up the probe with the protein in zone 1, ensuring that you have selected your desired function and temperature. Then select "Match Cook" to mirror selections in zone 2 and press START/PAUSE to begin cooking.

Q: Can you just heat one basket, or do you have to do both? And can you just heat one half of a basket, or do you have to do both halves?

A: Yes you can cook in just one , the upper level of basket when using the rack will be slightly more crisp

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Reviews

Customers are saying

Customers commend the Smart DoubleStack XL 2-Basket Air Fryer for its ease of use, generous size, and impressive capacity, making cooking more convenient and less messy. The air fryer's cooking performance and space-saving design are also appreciated, along with its overall performance and the reliable thermometer. However, some customers have noted concerns about the noise level and suggest that the controls could be more intuitive. A few customers have also mentioned design considerations related to the unit's fan exhaust.

This summary was generated by AI based on customer reviews.
  • Ease of use (52)
  • Size (40)
  • Capacity (36)
  • Noise Level (7)
  • Controls (5)
  • Design (3)

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.

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Meet the Ninja DoubleStack XL Smart 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. Also included is Ninja’s Smart Cook System. Ninja's Smart Cook System allows you to achieve the perfect doneness at the touch of a button with the integrated Foodi Smart Thermometer—no guesswork required. 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 countertops clear of clutter. * vs NINJA AF080 (power) and CHEFMAN 5QT Air Fryer

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Pros for Ninja - Smart DoubleStack XL 2-Basket Air Fryer with Leave-in Thermometer, 10 QT, 6-in-1 Smart Cook System, Space Saving Design - Deep Gray
Ease of use, Size, Capacity, Cooking Performance, Overall PerformanceEase of use, Capacity, Cooking Performance, Size, DesignOverall Performance, Cooking Performance, Capacity, Size, Ease of UseSize
Cons for Ninja - Smart DoubleStack XL 2-Basket Air Fryer with Leave-in Thermometer, 10 QT, 6-in-1 Smart Cook System, Space Saving Design - Deep Gray
Noise Level, Controls, DesignNoise LevelNoise Level, Basket Design, SmellThere were no cons for this product

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