Drafting, design service 463 north state, preston, idaho 83263 Once you take the peg out the hinge will come loose. Edison Sliding Opener™ (AOS) for Garage Doors and Pole Splash boards, double 2x12 msr headers, 2x4 spf girts and roof trusses. How to frame a garage door opening in a pole barn . After this, you just need to bring in the. In some cases (usually 7′ or 8′ heights), 20′ width residential doors are available. Install the header, jambs and center pad of the frame using a 2″ x 6″ lumber for the header, jambs and center pad. The door will slide left to right. Our products are purchased direct from the mill so you don't have to pay the retail store markup at your local lumber store. Residential doors are available in most heights, to 18′ wide. This drawing shows how to frame out a window and entry door opening. Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough opening. 3 inches from the bottom. He builds a shed...