Commercial Specification Grade. Long-life toggle switch with captive mounting screws for fast installation. 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. 20A-120/277V; 1 HP at 120V, 2 HP at 240V. Limited 10 year warranty. UL (Underwriter's Laboratories) listed.