SELKIRK 104400 GAS VENT SUPPORT ASSEMBLY, ROUND, TYPE B

SELKIRK 104400 - GAS VENT SUPPORT ASSEMBLY, ROUND, TYPE B, 4-IN. - 4", 4RV-GVS, SUPPORT ASSEMBLY, ROUND TYPE B GAS VENT. 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 4 INCH SUPPORT ASSEMBLY WITH SUPPORT PLATRE AND CLEAT - WILL SUPPORT UP TO 35 FEET. 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 ME - EQUAL TO 706978