Intermatic T40000R4 Timer Switch Load Center w/GCFI In Outdoor Enclosure Comes with GCFI Type 3R Rated Heavy-duty spot-welded Type 3R construction with beige powder coat paint Hasp (with hole for lock) holds permanently attached hinged door closed Combination 1/2 inch &ndash; 3/4 inch nominal knockouts conveniently located with two on back, five on bottom and one on each side Top mounting brackets plus two holes below switch level on back of enclosure Accepts any combination of PF1000M, P1403ME, P1353ME, P4043ME, P4243ME, T100M, or RC2000M series mechanisms