Cambro Optional Caster Kit Only -- 1 each.Ultra dependable, ultra durable front-loading pan carrier. Holds multiple pans of hot or cold food for hours. Rugged polyethylene shell and thick, polyurethane foam insulation. Built-in seal and vent ease cleaning and reduce replacement parts. Integrated pan staging area ensures secure staging. Built-in menu clip offers quick content labeling and identification. Unbreakable, ergonomic, molded-in handles for comfortable two-person carrying. Single, 9" (23 cm) wide latch provides quick and secure opening and closing. Interstacks and stacks with UPC400. Optional caster kit available.