Check the listing for details. Viking electronics E-40-SS Viking Door Box - Stainless Steel. Condition: New. Listed at 262.00 USD. Compact size: Front panel is the size of a typical single gang midsize wall plate Mounting: Flush mounts in a single gang electrical box (2.25” deep x 2.00” wide x 2.84” tall minimum) or surface mounts in a Viking model VE-3x5 (not included, see DOD# 424) Available in 5 standard faceplate finishes: Brushed Stainless Steel, Oil Rubbed Bronze, Polished Brass, Satin Black and Satin White PNL-40 faceplates: Replacement faceplates with matching screws available in all five standard finishes Vandal Resistant Features: 16 gauge polished brass or 18 gauge 304 stainless steel faceplate, 316 stainless steel push button, carbon fiber reinforced plastic speaker screen, scratch resistant powder coating, hex drive mounting screws Weather Resistant Features: Mylar speaker, faceplate gasket, mic and speaker gasket, internally sealed (IP67) push button switch, selfdraining mic mount and UV stable weather resistant powder coating (excluding E-40-SS 304 Stainless Steel faceplate) Telephone line powered Microphone and speaker volume controls Programmable Intelligent call progress detection for automatic hang-up on CPC, silence, busy signal, or time out Selectable auto answer feature for monitoring Programmable VOX (mic/speaker) switching speed Blue LED helps locate push button, indicate ringing and off hook