NGP Thresholds and Ramps
A threshold does one thing that no door sweep can do on its own — it gives the sweep something solid to...
NGP Lites and Louvers
Door lites and louvers are functional openings, and how they're sealed matters as much as how they look. National Guard's lite frames...
NGP Door Shoes, Bottoms and Sweeps
The bottom of the door is where most energy loss, sound transmission, and weather infiltration happens, and it's the hardest gap to...
NGP Astragals and Drip Guards
Two of the most overlooked gaps in a door assembly are the one at the top of the frame and the one...