00070007002 CapMaster for use with all 3-Inch & 4-Inch ve
Active Ventilation 4 in. Dia Aura PVC Vent Cap Exhaust with Adapter for Schedule 40 or Schedule 80 PVC Pipe in Mill Finish AV-4-PVC - The Home Depot
Master Flow 4 in. Goose Neck Vent Roof Cap in Black GNV4BL - The Home Depot
Active Ventilation 4 in. Dia Aura PVC Vent Cap Exhaust with Adapter for Schedule 40 or Schedule 80 PVC Pipe in White AV-4-PVC-WT - The Home Depot
Vent Systems 4" Inch Round Roof Vent Cap Galvanized Metal for All Weather Conditions Top Round Exhaust Cap with Rubber for Perfect Insulation Vent Cover - Chimney Cap 100 mm - Amazon.com
Rain Cap - Galvanized - 4 Inch
4 inch Aura Gravity Retrofit Vent | 4 inch Turbine Replacement
Broan 634 6-5/8 x 14-1/4 x 18-3/4 Inch Steel Black Roof Cap | Cooper Electric