Model K75 is approved for use in walls, floors and partitions with fire resistance ratings less than 3 hours.
4-1/4" (108mm) Maximum X 22 (0.85mm) gauge
Galvanized steel channel.
22 (0.85mm) gauge Galvanized steel curtain type out of the air stream.
• CLOSURE SPRINGS.
301 Stainless Steel Spring. (For Horizontal mount only, optional on vertical mount)
• FUSIBLE LINK.
Standard 165° F ( 74° C). Other available.
Vertical or Horizontal .
• MINIMUM SIZE.
Vertical & Horizontal Installation:
4"Wx 4"H (100 x100mm).
• MAXIMUM SIZE.
Single Section Vertical & Horizontal Installation:
60"Wx 53"H (1520 x 1350mm).
• Multiple Section Vertical Installation:
120"Wx 120"H (3050 x 3050mm).
• Multiple Section Horizontal Installation:
68"Wx 96"H. (1730 x 2440mm).
*Each damper is marked with a 1-1/2 hours UL 555
Classified fire damper label.
*Meets all UL and NFPA criteria for primary fire dampers in walls and floors with fire resistance ratings of less than 3 hours.
All UL Classified fire dampers must be fabricated in accordance with UL procedures. Available variation are limited to those incorporated in the approved procedures.
Approved variations available at additional cost are :
*Factory furnished sleeves.
Sleeves are available in 10 (3mm) through 20 (1mm) gauge steel and in lengths required for the specific application.
* Dampers furnished approximately 1/4"(6mm) smaller than given duct dimension
* Refer to the KBE Installation Instruction and supplements for complete installation details.