Simplex, surface mount assembly, screw-on cover, 6-position, 4-conductor, screw terminals. Ash. Captive retaining screw keeping the cover securely fastened and preventing damage to the assembly Threaded brass inserts on the terminal screws and washered screw terminals increase reliability and provide positive long-lasting connections Designed for mounting on baseboards, walls or other flat surfaces UL certified Protected by CorroShield 4-conductor.