A crib mattress should be a comfortable place for baby to sleep.
What is the size of a baby crib mattress.
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The consumer products safety commission defines the standard size for a full size baby crib as 28 inches wide by 52 3 8 inches long plus or minus 5 8 inch for both width and length 2 5 at a minimum the mattress should be 27 1 4 inches wide by 51 1 4 inches long and it should be no thicker than 6 inches.
A standard size crib mattress is a baby crib mattress with the following measurements.
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Standard baby crib and crib mattress sizes the safest size of baby cribs and crib mattresses is determined by the federal government.
At least 27 1 4 inches by 51 5 8 inches and no more than 6 inches thick.
Although there are usually no problems with fitting there is a bit of wiggle room within the regulations.
Sealy baby perfect rest waterproof standard toddler baby crib mattress 150 extra firm coils 51 7 x 27 3.