Black FridayDealsBuying guidesBrandsStoresTermsPrivacydeal.ai apps

© Deal.ai Inc.

Deal.ai › Ninja
Ninja
Ninja Double Stack XL 9.5L Air Fryer SL400UK

Ninja Double Stack XL 9.5L Air Fryer SL400UK

Best price now

$158.95at WalmartObserved at 12:14 PM

Compared across 4 stores. Prices are checked against each store and labelled with when.

Visit Walmart

Ask our shopping agent

Enter to send, Shift+Enter for a new line

Our take on the Ninja Double Stack XL 9.5L Air Fryer SL400UK

The Ninja Double Stack XL SL400UK is a dual-basket air fryer with two stacked 4.75-quart drawers, about 9.5 quarts total, so you can cook two foods at once without giving up much counter width. Its tall, narrow footprint is the main draw for kitchens short on space. At $158.95 at Walmart as of November 4, 2026, it sits at the low end of its recent range, well under its typical $200-plus pricing.

Best forSmall kitchens with limited counter spaceFamilies cooking two foods at onceAir fryer buyers who want a large total capacityReplacing a single-basket air fryer
Pros
  • Two independent baskets cook separate foods at different settings
  • Stacked design saves counter width versus side-by-side dual fryers
  • Large 9.5-quart total capacity suits families
  • Sync and match settings finish both drawers together
  • Dishwasher-safe drawers and crisper plates
Cons
  • Tall body needs overhead clearance under wall cabinets
  • Drawers are narrow and shallow compared with wide single baskets
  • Heavy and bulky to move
  • No dehydration or rotisserie modes

Ninja Double Stack XL 9.5L Air Fryer SL400UK prices at every store

  • eBayPre-owned

    In stockSold by setbuy

    $119.99+ $19.99 shippingObserved at 12:14 PM
    Visit store
  • WalmartNew

    In stockSold by DiscountsJungle

    $158.95Free shippingObserved at 12:14 PM
    Visit store
  • Microless.comNew

    In stock

    $221.09+ $146.13 shippingObserved at 12:14 PM
    Visit store
  • AmazonRefurbished

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $159.99Free shippingObserved at 12:14 PM
    Visit store

Ninja Double Stack XL 9.5L Air Fryer SL400UK price history

Lowest price we've seen: $158.95 on Nov 4 at Walmart. Tracked across 2 stores since Nov 4.

What reviewers say

Owners of the Double Stack line generally praise the space-saving layout and even cooking, and many say the two baskets changed how they cook weeknight meals. Common complaints center on the tall height fitting under cabinets and the narrow drawer shape limiting large items.

Pros
  • Saves counter width compared with side-by-side dual fryers
  • Crisps food evenly and quickly
  • Two baskets with independent settings are genuinely useful
  • Easy to clean
Cons
  • Too tall for some under-cabinet spaces
  • Narrow drawers fit less than the capacity suggests
  • Bulky and heavy on the counter

Specifications

Dual Basket
Yes
Power Source
Electric
Finish
Gray
Capacity
2.5 gallons

Questions and answers

Is the Ninja Double Stack XL worth it at $158.95?
At $158.95 at Walmart as of November 4, 2026, it is a strong price for a dual-basket air fryer with this capacity. If counter width is tight and you cook two foods at once, it is easy to justify.
How is it different from the regular Ninja Dual Zone?
The Double Stack puts the two baskets vertically instead of side by side, so it takes less counter width but more height. Capacity and dual-zone cooking are similar.
Will it fit under my kitchen cabinets?
Measure your clearance first. The stacked design is tall, and it needs room above for the top drawer and vents. It fits many kitchens but not all under-cabinet gaps.
What comes in the box?
You get the air fryer unit, two nonstick drawers, two crisper plates and a quick-start guide. No extra accessories are included.
Can I cook different foods in each basket?
Yes. Each drawer has its own settings, and match and sync modes let you finish both at the same time or copy settings across.
When is it cheapest?
Dual-basket Ninja fryers tend to drop around Black Friday and major sales. The current $158.95 is already near the low end of its recent range.
Where is the Ninja Double Stack XL 9.5L Air Fryer SL400UK cheapest?
At Walmart, for $158.95, as of our latest check.
Where can I buy the Ninja Double Stack XL 9.5L Air Fryer SL400UK?
4 stores we checked sell it, including eBay, Walmart, Microless.com, Amazon.

More from Ninja

  • N
    Ninja Luxe Café Premier Series ES601
    Ninja Luxe Café Premier Series ES601
  • N
    Ninja Luxe Cafe
    Ninja Luxe Cafe
  • N
    Ninja Luxe Café Series
    Ninja Luxe Café Series
  • N
    Ninja Espresso & Coffee Barista System
    Ninja Espresso & Coffee Barista System
  • N
    Ninja CREAMi Scoop & Swirl 13-in-1 Ice Cream Maker
    Ninja CREAMi Scoop & Swirl 13-in-1 Ice Cream Maker
  • N
    Ninja CREAMi 7-in-1 Ice Cream Maker
    Ninja CREAMi 7-in-1 Ice Cream Maker
  • N
    Ninja NC301 CREAMi Ice Cream Maker
    Ninja NC301 CREAMi Ice Cream Maker
  • N
    Ninja Creami Deluxe 11-in-1 Ice Cream Maker
    Ninja Creami Deluxe 11-in-1 Ice Cream Maker
All Ninja deals and products →