M-D Building Products
M-D Building Products offers a wide selection of door sweeps, thresholds, doorjambs, door bottoms, and drip caps to weatherproof doors. In addition, they offer push and kick plates and screen door grills.
National Guard Products
The variety of gasketing products seal gaps and air leaks all around the door.
Randalll Manufacturing has a varierty of door accessories: from door sweeps, thresholds and weather striping, to kick and push plates.