USP Double Wall Black 7" to 8" Increaser

Easily adapt your venting system with this 7" to 8" increaser adapter, perfect for connecting to an 8" chimney configuration. Built for a tight, secure fit, it ensures a smooth and reliable transition. Includes a hardware pack for fast, straightforward installation. Please note: Increasing flue size can affect draft performance and may lead to higher creosote accumulation—consult your appliance manufacturer for proper application.