For cribs manufactured before june 28 2011 when new retroactive safety regulations were issued for full size cribs unless the seller has written proof that the crib meets the standard above retailers should destroy any full size crib with or without drop sides and should not resell it.
Average baby crib dimensions.
Standard baby crib size the cpsc requires that full size baby cribs have a standard width of 28 inches and a standard height of 52 and inches but with a pull or minus factor of inches.
Because of this variation it s important to look for the recommended mattress size listed on the crib s box and or assembly instructions.
Internal dimensions of standard size baby cribs are regulated by the government so they are approximately the same for all full size cribs all standard size crib mattresses fit into all standard size cribs.
Top of crib mattress to top of side rail.
27 1 4 x 52 inches and not more than 6 inches thick usually thinner standard full size crib dimensions interior.
Due to different materials frame designs and style the external dimensions of standard size baby cribs can vary by a few inches even if they belong to the same crib type.
Crib height off floor floor to bottom of mattress support.
Regulations define a full size crib as one whose inside dimensions are 28 5 8 inches 71 1 6 centimeters in width and 52 3 8 5 8 inches 133 1 6 centimeters in length non full size cribs may be larger or smaller but must be rigid and must not have mesh sides.
28 x 52 3 8 inches plus or minus around 5 8 inch.