| Standard |
Rating |
Design Number |
| UL 1978 |
Pass – Zero clearance to combustibles |
CAS/FMF 120-04 |
| UL 2221 |
Internal Fire Test, Condition B –
Clearance to Combustibles:
DW-2R, Up to 16-in. dia., 3/4-in. to duct wall;
DW-2R, 18-in., 1-in. dia. 1-in. to duct wall;
DW-3R, Up to 24-in., 3/4-in. to duct wall
Fire-Engulfment Test – 2 hr |
CAS/FMF 120-03 |
| UL 2221 |
Internal Fire Test, Condition B – Pass
Clearance to Combustibles: 3/4-in. to duct wall;
Internal Fire Test, Condition A - Pass
Fire-Engulfment Test – 2 hr |
CAS/FMF 120-04 |
| CAN/ULC S144 |
Internal Fire Test – Pass
Fire-Engulfment Test – Pass
Fire Resistance Rating - 2 hr |
CAS/FMF 120-05 |
| ASTM E814 |
F-Rating - 2 hr
T-Rating - 2 hr |
CAS/FMF 120-03;
CAS/FMF 120-04 |
| CAN/ULC S115 |
F, FT, FH, FTH-Rating - 2hr |
CAS/FMF 120-03
CAS/FMF 120-05 |
UL 1978
CAN/ULC S662 |
Clearance to Combustibles:
DW-2R, Up to 16-in. dia., 3/4-in. to duct wall;
DW-2R, 18-in., 1-in. dia. 1-in. to duct wall;
DW-3R, Up to 24-in., 3/4-in. to duct wall |
CAS/FMF 120-03 |
