I'm considering replacing a flat wood veneer door with a wood or fiberglass full-view door from the kitchen to the garage. I'd like to get a slab, rather than a pre-hung unit, since the frame is fine and the door is a standard 32" x 80" x 1 3/4". I'd also like it to be as energy efficient as possible. My thinking is that a swing-type patio door is the closest to what I want. Any suggestions?