Hubbell Wiring Device-Kellems impact resistant Valox cover plates are used to cover electrical plugs to protect them from impacts and corrosion. They feature nylon / aluminium / brass / thermoplastic / stainless steel / zinc-plated steel construction for low friction, high thermal stability and longer life. These wall plates are coated with smooth / light texture / powder / brushed finish to reduce oxidation on exposed surfaces and are available in 4.56 & 4.62 inch lengths on Raptor Supplies.