BILLY Height extension unit, white, 32x11x14 "

It is estimated that every five seconds, one BILLY bookcase is sold somewhere in the world. Pretty impressive considering we launched BILLY in 1979. It’s the booklovers choice that never goes out of style.

Article Number402.638.53

Product details

With a shelf/height extension unit, you can make the most of the wall area, while freeing up space on the floor.Safety strap for mounting to wall included.Use with BILLY bookcase 31½x79½" for added storage vertically.Designer

IKEA of Sweden

Article Number402.638.53
  • Top panel:Particleboard, Paper foil, Plastic edging
    Side panel:Particleboard, Paper foil, Plastic edging, Paper edging
    Back:Particleboard, Paper foil, Paper edging
    FoilWipe clean using a damp cloth and a mild cleaner.Wipe dry with a clean cloth.
  • By using sawmill leftovers and scrap wood in the particle board in this product, we make use of whole trees and not only the trunks. That way, we take better care of resources.We want to have a positive impact on the planet. That is why by 2030, we want all materials in our products to be recycled or renewable, and sourced in responsible ways.
  • BILLYHeight extension unitArticle Number402.638.53
    Width: 14 ¼ "Height: 2 ¼ "Length: 30 ½ "Weight: 14 lb 14 ozPackage(s): 1

Product size

31 1/2 "
11 "
13 3/4 "


I love how easy theyJoyceI love how easy they were to put together! They look great!5
Great shelves!NatalieI’ve used billy bookshelves in several places in my home. I love the narrow depth, ease of assembly, versatility, how easy they are to customize and the clean simple lines.5
wonderfulShergreat addition to our living room5
Love itTITOLove it5
WonderfulMelissaJust what I needed!5
Great AdditionAndyThis gives an extra bit of oomph to the Billy bookcase that you didn't know you needed.5
Great extensionTRACEYThese are great! I love the added height. I have two of these on top of each of my Billy shelves to reach close enough to the ceiling to put trim around it and have it look like a built in.5
Perfect extraDeborahNeed a little more height? Cannot go wrong. I have these on all my billy cabinets5
Nice complementTOMASNice complement5
Great for adding extra shelvesHalWe have added 2 toppers to each off he bookcases. Easy to assemble And attach. Looks great!5
Good productJamesGood product5
Get what you pay forDeboraIt’s an easy item to assemble just wish they used metal parts instead of plastic. The little circles you are suppose to tighten break so easily.5
Surprising!!Sally B.We were very surprised to see one side of the back piece was a different color than the rest of the unit. It was all white the first three we bought!4
Extension cabinetSusan H.These extension cabinets brought my cabinet up to the ceiling in my dining room which made the room look taller! We love the look and the ease of putting everything together!5
Fits an old billy shelfTakiyah S.Fits an old billy shelf we had perfectly.5
Billy extensionJoelleGreat product5
Worked as plannedJohnny43It fit perfectly on our existing Billy book case5
Daca1434Really adds to the Billy bookcase5
Great ideaEssayons121I bought them to be extensions, but they would work due to height restrictions. I ended up using them as additional shelving in the closet.5


What is particleboard?

Particleboard is made from recycled wood and sawmill waste – so wood pieces with the wrong shade, woodchips and sawdust become a valuable resource instead of being discarded. We use boards for things like bookcases, bed frames, sofas and kitchen frames. To protect from wear and moisture, we apply varnish, veneer or foil that adds to the furniture's look. The day your sofa or bed needs replacing, the material in the particleboard can be recycled into something entirely new.

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BILLY Height extension unit, white, 32x11x14 "