SELKIRK 104100 GAS VENT TEE, ROUND, TYPE B, 4-IN.

SELKIRK 104100 - GAS VENT TEE, ROUND, TYPE B, 4-IN. - 4", 4RV-TS, ROUND TYPE B GAS VENT TEE. ROUND GAS VENT DOUBLE WALL CONSTRUTION WITH IT'S BUILT-IN AIR SPACE, PROVIDES PERMANENT INSULATION AND KEEPS THE INNER PIPE HOT AND OUTER RELATIVELY COOL ROUND VENT PIPE AND FITTINGS ARE DESIGNED FOR USE ON APPROVED GAS APPLIANCES IN RESIDENTIAL AND LIGHT COMMERICIAL APPLICATIONS STANDARD 4 INCH TEE UNDERWRITERS LABOTORIES UL 441 AND NATIONAL FIRE PROTECTION AGENCY NFPA 54 AND NFPA 211 VENTING GAS FIRED APPLIANCES, WATER HEATERS, FURNACES, STOVES, ETC. LOCKTAB-AN ALTERNATIVE METHOD TO SECURE PIPE WHEEN REQUIRED BY LOCAL CODE. OUTER MATERIAL 28 GAUGE GALVI - EQUAL TO 693820