Government safety regulators say more than 2.1 million dropside cribs by Stork Craft Manufacturing are being recalled.

It's the biggest crib recall in U.S. history.

The Consumer Product Safety Commission says nearly 150,000 of the cribs on recall carry the Fisher-Price logo.

The agency is aware of four deaths of young children who suffocated in the cribs which have a side that moves up and down to allow parents to lift children from the cribs more easily.