AFCO Door Components help to seal up your door. Products include door sills, thresholds, weatherstrip, door bottoms.
Hager Companies offers a complete line of thresholds and weatherstripping products for virtually any type of door application.
The slope "sweep areas" control ambient moisture and releases it harmlessly away from door sill and frame.
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 thresholds seal the door against air, dust, water and sound.
Pemko offers a wide selection of saddle thresholds, brush weather-stripping, ADA ramps, astragals, continuous geared hinges and door bottoms to meet virtually any commercial or residential application.
Randalll Manufacturing has a varierty of door accessories: from door sweeps, thresholds and weather striping, to kick and push plates.