Leviton T5320-W Straight Blade Tamper Resistant Duplex Receptacle, 125 V, 15 A, 2 Pole, 3 Wire, 1 Pack, White Shutter mechanism inside the receptacle blocks access to the contacts unless a two-prong plug is inserted, helping ensure hairpins, keys, etc., will be locked out TR symbol on residential receptacles assures they meet the 2008 NEC requirement Ultrasonic heavy-duty construction offers long, trouble-free service life Heavy-gauge, rust-resistant steel mounting strap Shallow design for maximum wiring room Shutter mechanism inside the receptacle blocks access to the contacts unless a two-prong plug is inserted, helping ensure hairpins, keys, etc., will be locked out Ultrasonic heavy-duty construction offers long, trouble-free service life Heavy-gauge, rust-resistant steel mounting strap Shallow design for maximum wiring room