Z-Flex Stainless Steel 4" to 5" Pipe Diameter Increaser (not eccentric)
Used to upsize a vent system. Recommended for use with vertical vent run applications.
• Vent material: AL29-4C stainless steel
• Certification: Tested to meet or exceed Underwriters Laboratories (UL) spec UL1738 and ULS636
• Approval: Cat II, III, IV venting
• Limited Lifetime Warranty