4" Pellet Vent Vert Cap

4", Round, Pellet Vent Vertical Cap, For Use With Vertical Terminations Only, Cap Features Twist Lock Collar & Grid To Keep Birds Out, Designed For Stoves That Burn Wood Pellets, Patent Pending Venting For Stoves & Inserts That Use Wood Pellets, UL Listed For 3" Clearance To Combustibles In The USA & Canada, Required For Vertical Venting Above 4,000'.