Optional Evacuation Frame for ALL 500 Series Compact Wood Cribs Add strength and sturdiness to our 510, 530, 560 and 755 cribs for a fire drill situation with this evacuation frame. Built to withstand elevator door openings and allows you to easily take a crib outdoors in an emergency and during fire drills. Heavy duty casters, two of which are locking. Cannot be used in conjunction with L.A. Baby drawer WC-526-N.