A:AnswerThe 6630 is the 2017 model, and the 6631 is the 2019 model. BOTH are exactly the same as far as I can tell. Neither one comes with the cooking griddle or the wok grille.
HTH,
Videodude
A:AnswerHello! In the user manual on page 40 (https://bit.ly/2x9jeOo) provides you with information to support your concerns on running a self-clean. We thank you for choosing Samsung! ^Lena
A:AnswerJ&J International is Samsung's official parts distributor for customers purchasing Samsung parts or accessories. To place an order you can go online at www.samsungparts.com, or by phone at 800-627-4368. J&J's hours of operation are 9:00 am - 8:30 pm EST, Monday – Friday. Thank you for being a part of the Samsung family. ^Lena
A:AnswerI've researched before and the only difference I could tell is cosmetics - the shape of the oven door handle and maybe a few other things I haven't noticed. They are identical performance-wise.