INSTALLATION INSTRUCTIONS FOR FIRE DAMPERS
detail of opening preparation and fire damper installation. wall rating - 2 hr. 3. note: the retaining angles on both sides of the fire damper may be inverted in order to accomodate a register or grille. 2-1/2" stud or runner 1/2" gypsum wallboard retaining angle damper sleeve fire damper duct 1/2" thick filler pieces - 2-1/2" wide to be ...
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