This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Single Wall & Double Wall
Gas Vent
Special V & 2V Type BH
Single Wall Clearances
| SINGLE WALL -V VENT DIAMETER (ID) | -V THIMBLE ASSEMBLY VENT SHELL DIAMETER (THRU PENETRATION) | CLEARANCE TO COMBUSTIBLES (VENT TO CEILING/WALL) | -V THIMBLE ASSEMBLY CLEARANCE TO COMBUSTIBLES (SHELL TO JOIST) | CLEARANCE TO NON-COMBUSTIBLES | THROUGH WALL/FLOOR OPENING |
|---|---|---|---|---|---|
| 8" | 12" | 3" | 1" | 0" | 16-1/2" |
| 10" | 14" | 3" | 1" | 0" | 18-1/2" |
| 12" | 16" | 4" | 2" | 0" | 20-1/2" |
| 14" | 18" | 4" | 2" | 0" | 22-1/2" |
| 16" | 20" | 5" | 3" | 0" | 26-1/2" |
Double Wall Clearances
| -2V VENT DIAMETER (ID) | -2V THIMBLE ASSEMBLY VENT SHELL DIAMETER (THRU PENETRATION) | -V THIMBLE ASSEMBLY CLEARANCE TO COMBUSTIBLES (SHELL TO JOIST) | CLEARANCE TO NON-COMBUSTIBLES | THROUGH WALL/FLOOR OPENING |
|---|---|---|---|---|
| 8" | 12" | 2" | 0" | 16-1/2" |
| 10" | 14" | 2" | 0" | 18-1/2" |
| 12" | 16" | 2" | 0" | 20-1/2" |
| 14" | 18" | 2" | 0" | 22-1/2" |
| 16" | 20" | 2" | 0" | 24-1/2" |
Product Resources
The Special Gas Vent -V Type BH Series has been certified by UL. This certification mark indicates that the product has been tested to and has met the minimum requirements of a widely recognized (consensus) U.S. Product safety standard, that the manufacturing site has been audited, and that the applicant has agreed to a program of periodic factory follow-up inspections to verify continued performance.
Model DW-V Type BH is UL Listed under file number MH60693 and complies with UL 1738, ULC S636-08.
The Special Gas Vent 2V Type BH Series has been certified by UL. This certification mark indicates that the product has been tested to and has met the minimum requirements of a widely recognized (consensus) U.S. Product safety standard, that the manufacturing site has been audited, and that the applicant has agreed to a program of periodic factory follow-up inspections to verify continued performance.
Model DW-2V Type BH is UL Listed under file number MH60693 and complies with UL 1738, ULC S636-08.
