Specifications & Technical Details
The 1900 Operable Door Grille is U.L. listed and fire rated for use in 1 3/4″ thick doors rated up to 90 minutes. The 160º fusible link overrides the manual operator when activated by heat.
The frame and blades are constructed from 16-gauge CRS.
Factory-primed, dark bronze finish with 40% approximate free area.
Minimum size12″ x 6,” maximum size 24″ x 24.”
*Note: for exterior use, high-humidity, or salt air, specify zinc-plated or stainless steel.