Overview Reviews Product Description Cooper B-Line 20166-SD Wall Mount Enclosures, Type 4 Premier w/Quarter-Turn Latches Series NEMA: 4/12 Length: 16 20H 6W. Product Videos Custom Field Nema 4/12 Product Reviews Write a Review Write a Review × Cooper B-Line Cooper B-Line 20166-SD Wall Mount Enclosures, Type 4 Premier w/Quarter-Turn Latches Series NEMA: 4/12 Length: 16 20H 6W Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *