This page includes all diameters 3 inch to 24 inch) for the Fire Stop Spacer for single wall vent pipe. Use this with vertical venting systems from the tankless heater to the roof. It provide support to the venting system, and gives it the necessary clearance to combustible materials according to building code.
For diameters of 5" and more, the gearclamp is included but not attached, and does not include the gear clamp bracket.
• Vent material: AL29-4C stainless steel
• Certification: Tested to meet or exceed Underwriters Laboratories (UL) spec UL1738 and ULS636
• Approval: Category II, III, IV venting
• Limited Lifetime Warranty