Heavy commercial traffic requires regular replacement of vertical door weatherseals. The CRL Commercial Door Astragal is an easy-to-install, easy-to-adjust mill finished extruded aluminum weatherseal that fits millions of existing installed commercial doors. It installs with just a screwdriver and the pre-punched spring tensioner assures fast, easy adjustment to the mating surface. It is similar to, and will retrofit, Kawneer® astragals with a center channel width of 1/2" (12.7 mm) or more. An exclusive impermeable film barrier effectively stops air infiltration. It can also be cut to fit unusual length requirements.