Designed to function as a heat barrier in air handler openings in fire resistant membrane ceilings.
UL-listed fusible link (165 degree fahrenheit standard).
UL approved for use in design types: L-528, L-546, L-558, L-562, L-563, L-585, M-516, P-533, P-544, and P-547 (similar design applications*: L-521, L-550, L-586, and P-522).
Opening 1/4" oversized to accommodate register/grille.
1" perimeter flange provided for boot clip or angle installation.
Approved for use with steel and aluminum grilles/registers.
Plaster ground extension available in 1", 1-1/2", and 2".
Body case is fabricated from hot dipped G60 galvanized steel sheets as per ASTM A-653.
No assembly required, ready to mount.
Insulation: available in R-6 or R-8.
Available in collar diameters: 4"-12".
Box depth is 11-1/2" for collars over 8". All others are 9-1/4".
Damper surface depth is minimum 3" from drywall lip.
|6" x 4"||16" x 16"|
*Similar design applications have not been evaluated and are not UL Classified for use with the associated Miami Tech products.