• 12 parts
  • Checked September 2026

Parts of a Crib

One baby crib from the front, with every piece an assembly sheet names.

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1 2 3 4 5 6 7 8 9 10 11 12
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Each numbered ring is a button. Use the arrow keys to move between them and Enter to choose. Names are read out in Study, and once a part is answered.

All 12 parts on the diagram

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The crib itself 9

  1. Headboard The end panel at the crib's head, often the taller one.
  2. Footboard The end panel at the foot of the crib.
  3. Slats The upright bars that make the sides of the crib.
  4. Mattress The pad the baby sleeps on, made to fit the crib closely.
  5. Mattress support The frame or platform under the mattress, often adjustable in height.
  6. Top rail The bar along the top of a side, above the slats.
  7. Bottom rail The bar along the bottom of a side, under the slats.
  8. Corner post The upright at each corner, where a side meets an end.
  9. Teething rail A plastic cover on the top rail, where a baby may chew.

Below the bottom rail 3

  1. Leg The part that holds the crib up off the floor.
  2. Caster A small swiveling wheel under each leg.
  3. Stabilizer bar A low bar that joins the two ends and stiffens the crib.

How this list was compiled: Read 2026-09-30; a name is kept only where two independent sources use it. Makers' assembly sheets, each read on the Internet Archive: (1) A crib maker's assembly instructions for a double drop-side crib (2000), https://archive.org/details/manualsonline-id-1f7a2bf6-79ef-4bca-8d8e-e80c1fcff0d2 : footboard, headboard, spring, stabilizer bars, crib end, crib side, top rail with plastic teething rail, bottom rail, corner post, casters. (2) A second maker's two 4 in 1 crib manuals, https://archive.org/details/manualzz-id-1319927 and https://archive.org/details/manualzilla-id-6335112 : headboard, footboard, stationary side, side panels, spring frame, mattress support, legs, teething rails. (3) A third maker's 4 in 1 crib sheet, https://archive.org/details/manualzilla-id-5847442 : headboard, footboard, front rail, back rail, legs, stabilizer bar, adjustable mattress support, crib end bottom rail. (4) A fourth maker's convertible crib sheet, https://archive.org/details/manualzilla-id-5909676 : crib ends, front leg, back rail, casters, bottom stretcher, top rail. (5) Four more sheets, https://archive.org/details/manualzilla-id-5932956 , https://archive.org/details/manualzilla-id-5904739 , https://archive.org/details/crate-and-barrel-cameron-ash-crib-instructions and https://archive.org/details/manualsbase-id-642116 : left and right end, stationary side, mattress support, slats, end panels, side panels, legs, crossbar, headboard, footboard. (6) Government of Canada, Cribs, Cradles and Bassinets Regulations, https://laws-lois.justice.gc.ca/eng/regulations/SOR-2016-152/FullText.html : slat (includes a post, bar or rod), mattress support, stationary side, top rail and bottom rail, posts. (7) Wikipedia, Infant bed: a slatted, high-sided child's bed; head and foot boards; corner posts; casters; mattress. Licence: own work

The drawing: Drawn for this site on 2026-09-30 from plain geometry; nothing traced. Not to scale. Licence: own work

How it works

A crib is a small bed with four high sides. These are the names makers print in their parts lists, so that an assembly sheet or an order for a spare piece makes sense.

Read the full guide

Ends and sides

The two end panels are the headboard and the footboard; some makers call both crib ends. Each long side is a row of slats held between a top rail and a bottom rail. A teething rail is a plastic strip that caps the top rail. The sides and ends meet at the four corner posts.

Inside and underneath

The mattress lies on the mattress support, which some makers call the spring. Below the bottom rail, each post becomes a leg, often with a caster under it. A stabilizer bar joins the two ends low down.

  • Parts lists differ: one maker's stabilizer bar is another's stretcher or crossbar.

Questions and answers

What are the parts of a crib called?

The ends are the headboard and footboard. Each side has slats between a top rail and a bottom rail. They join at four corner posts, which end in legs and often casters. Inside, the mattress rests on a mattress support.

What are the bars on a crib called?

Slats. They are the upright bars that make up each side. Makers' parts lists and crib regulations use that word whether the bars are flat or round; some people call round ones spindles.

What is the mattress support on a crib?

It is the frame or platform the mattress lies on. Some makers call it the spring or spring frame. On most cribs it hangs from brackets on the posts and can be set at more than one height.

What is a teething rail?

A smooth plastic strip fitted over the top rail of a side. It covers the wood at the height where a standing baby is likely to chew.

What is the difference between a headboard and a footboard?

They are the two end panels. On many cribs the headboard is the taller of the two. On others the ends match, and the parts list simply calls them crib ends or end panels.