The BGV Construction & Windows LLC 9-Minute Rule for Door Installation Washington DcAction 11Attach the trim, Toenail the trim to the door frame with No. Door Installation Washington DC. 4 finish nails. Toenail the trim to the framing with No. 6 coating nails. In this post, we'll concentrate on setting up common prehung doors. These have a door jamb that's 4-9/16 in. wide and also are made to suit a 2x4 wall that's 4-1/2 in. Door…See More