800T and 800H Accessories, Push Button Enclosure, Thermoplastic polyester blend, UL94 5VA, 4 Holes, Type 4/4X. Stainless Steel 304 Material used on Base and Cover (material thickness 0.060 inches). Bottom Conduit Entry, one hole, 3/4 inch knockout, supplied with 1490-N9 conduit hub. Grounding screw provided inside enclosure. Suitable for field replacement for existing Pushbutton Stations or can be used for field assembly of complete pushbutton stations