DuraTech Firestop Joist Shield 5" to 8" Size:7 in. Size Lid Size Fits Flue

Size Lid Size Fits Flue Size 9 x 9 18" x 18" 8" x 8" to 9 1/2" x 9 1/2" 9 x 13 18" x 22" 8" x 12" to 9 1/2" x 13 1/2" 9 x 18 18" x 27" 8" x 17" to 9 1/2" x 18 1/2" 12 x 12 21" x 21" 11" x 11" to 12 1/2" x 12 1/2" 13 x 13 22" x 22" 12" x 12" to 13 1/2" x 13 1/2" 13 x 18 22" x 27" 12" x 17" to 13 1/2" x 18 1/2" 18 x 18 27" x 27" 17" x 17" to 18 1/2" x 18 1/2" Measuring for Your Chimney Cap with Big Lid

Up to 18" logs

5 Inch x 20 Feet Chimney Liner Kit with appliance insert connector

Natural Clay (standard)

soot and ash occasionally seep from fireplaces and woodstoves during normal use

DuraTech Firestop Joist Shield 5" to 8" Size:7 in. Size Lid Size Fits FlueThe DuraTech Firestop Joist Shield is used when the DuraTech Class A pipe is passing through a floor or ceiling where a ceiling support box is not used. The plate gets mounted to the underside of the ceiling and the sleeve is adjustable to cover the framing. Note: The Firestop is not needed when passing through the roof decking. Measurement Chart: DuraTech Firestop Joist Shield 5" to 8" Size 5" 6" 7" 8" A 7. 125" 8. 125" 9. 125" 10. 125" B 10. 875"