VIHALS Sideboard, white, 55 1/8x18 1/2x29 1/2 "
+17¼″ margin
Will fit in a ?
Yes, it will fit!
Good news: all 2 packages of KALLAX Shelf unit, white, 43 7/8x57 5/8 " fit individually in a straight orientation in a Tesla Model Y 2023 with seats down.
Fit Details
With seats down, Good news - all 2 packages fit individually. The tightest one is Package #1 (56½″ × 16″ × 5″), with +18¾″ at cargo length (best loaded straight). We're about 95% confident in this estimate.
KALLAX Shelf unit, white, 43 7/8x57 5/8 "
Box: 56½″ × 16″ × 5″ · 52 lb
Based on IKEA US (United States).
Package dimensions last checked and updated on Aug 31, 2026
Package
Status
Limiting factor
Best orientation
Package #1
56½″ × 16″ × 5″
Status:+18¾″ margin
Limited by
Limiting factor:Cargo length
Best orientation:Straight
Package #2
56½″ × 16¼″ × 4¾″
Status:+18¾″ margin
Limited by
Limiting factor:Cargo length
Best orientation:Straight
Vehicle limits
Opening width / height
39¾″ / 27⅛″
Cargo width / height
37⅜″ / 27⅛″
Cargo length seats up / down
43¾″ / 76⅜″
Loading sill height
27½″
Tesla Model Y 2023
Measurements last checked and updated on Mar 10, 2026
Helpful tips
Use these loading tips to improve your chances of fitting KALLAX Shelf unit, white, 43 7/8x57 5/8 " in Tesla Model Y 2023.
Use available cargo length
Push the package fully toward the seat backs to use all cargo length.
Keep a straight loading path
Keep the package straight and level while loading.
Plan package order
Load each package one at a time. Individual package fit does not guarantee all packages will fit stacked together.
Other items to check in Tesla Model Y 2023
Ranked by fit margin and package-dimension similarity. This improves as we index more items.
About the Tesla Model Y 2023 boot
The Model Y boot is long and flat, with a deep floor even before you fold. The opening is 39¾″ wide × 27⅛″ tall, and the floor already runs 43¾″ with the seats up, stretching to 76⅜″ folded, a gain of 32⅝″. The sill height is 27½″ with a 0″ drop, so the floor sits level with the lip and items slide straight in. The opening is on the low side, so tall boxes can catch on the way through. It is excellent for long flat-packs and big shops, less so for very tall items. Lead with the long edge and slide it in flat.
About the KALLAX Shelf unit, white, 43 7/8x57 5/8 " package
The KALLAX shelf unit arrives as two packages, and the larger one measures 56½″ long, 16″ wide and 5″ thick. That length is what decides the car. The whole order weighs 95 lb 3 oz, so it is a two-person lift even though the boxes look thin. Flat-pack board has no give, so you cannot bend it around a wheel arch or a seat back. An estate or an SUV with the rear bench down handles it comfortably. Load the long box first, on its edge and angled towards the far corner, then slide the second one alongside.
Frequently asked questions
Find quick answers about fit for KALLAX Shelf unit, white, 43 7/8x57 5/8 " in Tesla Model Y 2023, including seats up vs seats down, limiting factor, best orientation, and package-by-package margins.
Will KALLAX Shelf unit, white, 43 7/8x57 5/8 " fit in Tesla Model Y 2023?
Yes. With seats down, it fits with +18¾″ at Cargo length. Best orientation: straight.
What is the tightest part?
The limiting factor is Cargo length, with +18¾″ margin in seats down.
Do I need to fold the seats?
Results differ by configuration. Seats up is No and seats down is Yes.
Do all packages fit?
Yes. All 2 packages fit individually in seats down. The tightest one is Package #1 (56½″ × 16″ × 5″).
How tight is this fit?
This result is in the comfortable clearance band (+18¾″ at Cargo length).
Does it fit with seats up or seats down?
Seats up: No (-1⅝″). Seats down: Yes (+18¾″). Default selection follows YES > MAYBE > NO.
Which package is the hardest to load?
Package #1 (56½″ × 16″ × 5″) is the tightest, with +18¾″ at Cargo length.
Do all packages fit in the car at the same time?
We test each package individually. All packages fitting individually does not guarantee they will fit stacked together. You may need multiple trips.
Which loading orientation works best?
Straight is the best orientation for this result in seats down.
How confident is this result?
Confidence is 95 out of 100 based on available dimensions and margin tightness.