Type 4 and 4X deep-hinged window kit, mild steel. Provide protection, visibility and easy access to equipment and components installed behind the viewing area. Window kits are conveniently sized to allow direct mounting in the usable door area of Hoffman NEMA and CONCEPTĀ® wall-mount enclosures, as well as any Hoffman enclosure with a suitably sized mounting surface. These kits have an aesthetic appearance, quarter-turn latching for easy access, 0.25 inch (6 mm) thick, clear polycarbonate material for viewing, 2.5 inch (64 mm) depth to allow for deep controls and a built-in gasket compression stop to facilitate flush mounting. Each kit comes with a mounting template and hardware to allow for easy installation and can be mounted either left or right hinged.