Safe-Lok Cover B Size (Ritter) 13-7/8' x 9-7/8' x 1-3/8'. The cover fits B-Lok flat and divided trays only. The new tall size accommodates the Zirc Performance Tool Organizer and most of the stainless-steel cassettes. The cover complies with OSHA and CDC guidelines for infection control and safety. The cover is puncture and leakproof and can be disinfected by surface cleaner or washing. DO NOT HEAT STERILIZE.