Single-gang Vertical or Horizontal with (WP17) Flexi-Guard Inserts, 3-5/8-Inch Depth, Clear * Complies with 2008 NEC Article 406.8 (B) * Packaged with 3 patented inserts for GFCI, duplex, toggle or round receptacles * Single-gang covers mount both vertically and horizontally by switching the hinge points * Heavy-duty polycarbonate construction