This NEMA 3R doublegang receptacle cover utilizes six split inserts which creates virtually any dual device combination, as well as providing additional flexibility because the inserts can be rotated 90, 180 or 270 degrees. This provides coverage for horizontally or vertically mounted devices as well as left hand or right hand applications without removing and switching the two installed devices. UV stabilized polycarbonate with two cord outlets, measures 5 wide, 51/2 high and 25/8 deep. Recommended for 16 gauge or lighter cord sets. Shipped with gasket, mounting screws, base and cover assembly and patented inserts. Meets UL and CSA cold impact testing.Additional Information:#149 Manufacturer Instruction Sheet PDF File