Postal Applications Construction Application Post & Delivery centres Vestibules CRE-5 applications STANDARDTM Flexible PVC Rubber Thickness : 1 13/16″ (46mm) Industrial/Commercial Heavy duty to 118″ x 118″ (3m x 3m) All Temperatures -7° to 60°C STEEL-LITE TM Rigid 16 ga. Galvanized steel Thickness : 1 3/4″ (44mm) Security US Postal Service All temperatures