Classic Clamp Cap 13" x 13"

Base O.D.: 13 1/2" x 13 1/2" 

Lid Size: 22" x 22" 

Fits Flue Size: 11 1/2" x 11 1/2" to 13 1/2" x 13 1/2" 

Features:

* Targeted Protection for Flues 

* 8" Screen Height 

* Adjusts to Fit 2 1/2" of Flue Deviation 

* 3/4" Mesh

* Secure One-Screw Tightening

* Large Removable Lid