Vacu-Stack, Oval - 8" x 12"

Vacu-Stack, Oval - 8" x 12" is made to fit solid pack Class A, Masonry, or Single Wall Chimneys. It's designed to stop down drafts and smoking and is very easy to install. Simply slide the Vacu-Stack VSS (with the spring fit design) into the pipe. The Vacu-Stack also performs as regular rain cap protecting against debris, snow, rain and critters.