2" Vertical Mount Fire Damper 2533-18X18 past 12 months Standard Features * 2501 -Square

Standard Features * 2501 -Square or rectangular for vertical mount only

Note: Sizes listed are the duct or opening size the grille will fit into

Narrow ceiling grid dimples for 9/16" T-Rails

Fits 1x1 ceiling grids (collar size 6"-10")

Single deflection transition box mount spiral pipe grille

2" Vertical Mount Fire Damper 2533-18X18 past 12 months Standard Features * 2501 -Squareh3. Standard Features * 2533 Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. * 2534 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 29h. * UL and California State Fire Marshall approved * 2" thinline frame * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G 90) * Self