USP Double Wall Black 6" to 8" Increaser

Make a smooth transition to a larger venting system with this 6" to 8" increaser adapter. Designed for a secure and dependable fit, it enables easy connection to an 8" chimney setup. Includes a hardware pack for quick, hassle-free installation. Note: Upsizing your flue diameter may impact draft and increase the potential for creosote buildup—always check with your appliance manufacturer for recommended use.