APPLICATION
Model K75 L is approved for use in walls, floors and partitions with fire resistance ratings for 4 hours and less.
STANDARD CONSTRUCTION
• FRAME.
4-1/4 " (108mm) Maximum X 22 (0.85mm) gauge Galvanized steel channel.
• BLADES.
22 (0.85mm) gauge Galvanized steel curtain type out of the air stream.
• FINISH.
Mill.
• CLOSURE SPRINGS
301 Stainless Steel Spring .
• FUSIBLE LINK.
Standard 165° F (74° C). Other available.
• MOUNTING.
Vertical
Model K75 C --- 4"Wx 4"H (100 x100mm).
Model K75 CR ---- diameter 3" (76mm).
Model K75 CO ---- diameter 3" (76mm).
MAXIMUM SIZE.
Model K75C Single Section:
Vertical Installation
58"Wx 52"H (1473 x 1321mm).
Model K75CR & CO Single Section:
Vertical Installation
Diameter 53" (1346mm)
FEATURES
*Each damper is marked with a 3 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 4 hours
and less.
VARIATION
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 through 20 gauge steel and in lengths required for the specific application.
NOTES
* Dampers furnished approximately 1/4" smaller than given duct dimension
* Refer to the KBE Installation Instruction and supplements for complete installation details.