Commercial Specification Grade. Lighted long-life toggle switch with captive mounting screws for fast installation stays lit when the power goes off. Large-head terminal screws backed out and staked for fast side wiring of up to No. 10 copper wire. Heavy-gauge rust-resistant steel mounting strap, break-off plaster ears for best alignment. Large silver-cadmium oxide contacts insure long life. Limited 10-year warranty. UL (Underwriter's Laboratories) listed.