On-Stage Rack Drawer Foam is the perfect addition to the RDL Series rack drawers when an extra layer of protection is needed. This foam inserts directly to its drawer counterpart (be sure to select matching sizes) and features perforated 0.75” blocks that can be separated by hand to create the perfect fit for your gear. Made with medium-density foam, these inserts are firm, yet flexible, protecting inner drawer contents from scuffs, scratches and impact damage from transport; An absolutely must for delicate wireless antennas, transmitter belt-packs and microphones.