C&E Blank Surface Mount Box for Keystones, 2 Hole, White (CNE43736) This white surface mount box is designed to house up to 2 keystones of any type Keystones come in many different varieties, from network jacks to HDMI couplers, BNC couplers and beyond Networking, Home Theater and security/surveillance is all covered by this simple to install and highly dynamic surface mount box 2 Keystone Slots Prune able Design : Prune the pillar height to suit keystone base if necessary Operation Temperature :-40 Degree C ~ +70 Degree C Body : Fireproof ABS UL-94V0, White In Color