Model K75 Type AV
without spring
Model K75 Type AH
Model K75 Type AV-Dy
Model K75 Type AH-Dy
with spring
UL classified 1½ hours rated

Model K75 Type LV
UL classified 3 hours rated

Model K75 Type BV
without spring
Model K75 Type BH
Model K75 Type BV-Dy
Model K75 Type BH-Dy
with spring
UL classified 1½ hours rated

Model K75 Type LBV
UL classified 3 hours rated

Model K75 Type CV, CRV, COV
without spring
Model K75 Type CH, CRH, COH
Cv-Dy, CH-Dy, CRV-Dy, CRH-Dy
COV-Dy, COH-Dy
with spring
UL classified 1½ hours rated
Model K75 Type LCV, LCRV, LCOV
UL classified 3 hours rated

Thin line model frame
Thin line model frame is 2" deep
fire resistance rating 1½ hour for
Models K75
Type DV, DH, DBV, DBH
Note: All models are available
as static and dynamic dampers

3 hours fire resistance rating for
Model K75 Type NV, NBV

DBV, DBH, NBV Blades out of Air stream

Model KSD-333-I-PB
UL 555S leakage resistance rated class I (ultra low leakage)

Model KSD-333-II-PB
UL 555S leakage resistance rated class II ( low leakage)

Model KSD-333-III-PB
UL 555S leakage resistance rated class III (leakage)

Model KSD-333-IV-PB
UL 555S leakage resistance rated class IV (leakage)

Model KFSD-III-1-PB
1½ Hour class I
- UL 555 1½ Hour rated
- For use in rated partitions of 2 hours or less
- UL 555S leakage rated class I

Model KFSD-III-2-PB
1½ Hour class II
- UL 555 1½ Hour rated
- For use in rated partitions of 2 hours or less
- UL 555S leakage rated class II

Model KFSD-III-3-PB
1½ Hour class III
- UL 555 1½ Hour rated
- For use in rated partitions of 2 hours or less
- UL 555S leakage rated class III

Model KFSD-IV-4-PB
1½ Hour class IV
- UL 555 1½ Hour rated
- For use in rated partitions of 2 hours or less
- UL 555S leakage rated class IV

KCFSD-222-I-PB 1 Hour Class I
- UL 555 1 hour rated for use in 1 hour corridor ceilings
- UL 555S leakage rated Class I
- Silicone blade edge seals

KCFSD-222-II-PB 1 Hour Class II
- UL 555 1 hour rated for use in 1 hour corridor ceilings
- UL 555S leakage rated Class II
- Metal to metal blade edge seal

KCSD-444-I-PB 1 Hour Class I
- UL 555S leakage rated Class I
- Silicone blade edge seals

KCSD-444-II-PB 1 Hour Class II
- UL 555S leakage rated Class II
- Metal to metal blade edge seal