Guardian WRT 20 HD Telephone, WRT 20 HD, Volume Control, Outdoor, 1 Lines, Wall, Plastic, NEMA 3R G2422874 Comfort Grip Comfort Grip 1 2015 Hard Hat ANSI Class E ANSI Impact Type 1 Accessory Slots Yes Graphics None ANSI Electrical Class E CSA Class E Includes Hard Hat Overall Width 9 3 4 in Overall Depth 4 in Overall Height 12 in Manufacturer Warranty Length 5 yr MFR # WRT 20 HD Zoro # G7832063 UPC # Country of Origin Canada Color Yellow Features Electret Noise Reducing Microphone Volume Control Yes Number of Lines 1 Includes Membrane Keypad Mount (Type) Wall Requires Phone Line Cord Type Curly Standards CSA Certified Facility Type Commercial