YOU are going to need shims, liquid nail for the bottom to seal the threshold. Trim, silicon, screws, a level, and a triangle square. You also need some paintable caulk to seal around the outside if you have a wood exterior. I also recommend tar paper to wrap the 2x4's before the door goes in. Before it is done check to see if it slides open and closed easily. Make sure it is the same size as the opening. Good luck
Frame 2x4 studs paint
Weather stripping and gap sealer.
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