KALLAX Shelf unit, white, 30 1/8x30 1/8″
+2⅞″ margin
All items that fit an Alfa Romeo Spider 2008
Will fit in an ?
No, it won't fit.
It will not fit in this setup: BILLY Bookcase, white, 31 1/2x11x79 1/2″ is too large for an Alfa Romeo Spider 2008 with seats up.
Fit Details
With seats up, This package will not fit in this setup. The blocker is cargo length, and you're short by 28⅝″ even with diagonal loading. We're about 95% confident in this estimate.
BILLY Bookcase, white, 31 1/2x11x79 1/2″
Box: 81¼″ × 11¾″ × 5″ · 88 lb 1 oz
Based on IKEA US (United States).
Package dimensions last checked and updated on Oct 21, 2026
Also on IKEA:United Kingdom
Package
Status
Limiting factor
Best orientation
Package #1
81¼″ × 11¾″ × 5″
Status:28⅝″ short
Limited by
Limiting factor:Cargo length
Best orientation:Diagonal
Vehicle limits
Opening width / height
34¼″ / 18⅞″
Cargo width / height
35⅞″ / 18⅞″
Cargo length seats up / down
30⅜″ / n/a
Loading sill height
36¼″
Alfa Romeo Spider 2008
Measurements last checked and updated on Oct 21, 2026
Helpful tips
Use these loading tips to improve your chances of fitting BILLY Bookcase, white, 31 1/2x11x79 1/2″ in Alfa Romeo Spider 2008.
Use available cargo length
Use seats down if available to gain cargo length.
Load diagonally first
Load diagonally first, then straighten once inside.
Try fitting alternatives
Check the Similar items that fit section for safer alternatives.
Alternatives that fit in Alfa Romeo Spider 2008
Ranked by fit margin and package-dimension similarity. This improves as we index more items.
About the Alfa Romeo Spider 2008 boot
Height sets the rules in the Spider's boot. It is 18⅞″ tall, and since a boot lid means boxes go in from above, all of that height counts at the opening. The floor measures 30⅜″ in length and 35⅞″ across at its narrowest, and the opening is 34¼″ wide. With no rear seats to fold, long flat packs and tall boxes are out, while small, flat boxes suit it well. The loading sill is high, at 36¼″. Lift each box clear of the sill, then lower it straight down onto the floor.
About the BILLY Bookcase, white, 31 1/2x11x79 1/2″ package
The white BILLY is packed in one long, narrow box: 81¼″ × 11¾″ × 5″. It weighs 88 lb 1 oz, and at that length you want a second person to carry it. Loaded end first, it asks little of the opening: only room for its 11¾″ by 5″ end. Lying flat and straight, it needs 81¼″ of floor for the longest side. On its side and at an angle, it needs less floor but more width at the opening, and the verdict on this page shows whether that works in your boot. Lift it level between the two of you and keep it that way until the whole box is in the boot.
Frequently asked questions
Find quick answers about fit for BILLY Bookcase, white, 31 1/2x11x79 1/2″ in Alfa Romeo Spider 2008, including seats up vs seats down, limiting factor, best orientation, and package-by-package margins.
Will BILLY Bookcase, white, 31 1/2x11x79 1/2″ fit in Alfa Romeo Spider 2008?
No. With seats up, it is short by 28⅝″ at Cargo length, even with diagonal loading.
What is the tightest part?
The limiting factor is Cargo length, with -28⅝″ margin in seats up.
Why does it not fit?
The blocker is Cargo length: with seats up, the box is 28⅝″ bigger than the space there.
Can I load it diagonally?
Yes, diagonal is the best orientation for this check, with -28⅝″ around the limiting point.
How tight is this fit?
This result is in the clear no-fit band (-28⅝″ at Cargo length).
Does it fit with seats up or seats down?
Only the seats-up result applies to this car: No (-28⅝″).
What do YES, MAYBE and NO mean here?
YES means there is at least 2⅜″ to spare at the tightest point, in the best way the box can go in. MAYBE means it fits on paper, but with less than 2⅜″ to spare, so trim, the parcel shelf or the loading angle can decide it. NO means the box is bigger than the space at its tightest point, whichever way it goes in. Every margin on this page is that real gap: the car's measurement minus the box's.
What should I do instead?
Use the Helpful tips & alternatives section to choose a smaller item, different orientation, or split-load plan.
Which loading orientation works best?
Diagonal is the best orientation for this result in seats up.
How confident is this result?
Confidence is 95 out of 100 based on available dimensions and margin tightness.