Ventilation Accessories
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Ventilation Accessories
Square to Round Transition Box
SKU SDB
Price range: $28.95 through $91.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Storm Collar
SKU SC
Price range: $17.95 through $80.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Flue Cap – Galvanized
SKU FC
Price range: $17.95 through $96.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Tapered Duct Reducer
SKU TR
Price range: $19.95 through $85.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Duct Increaser / Reducer – Galvanized
SKU IR
Price range: $17.95 through $62.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Wall Vent Collar – Galvanized
SKU WVC
Price range: $17.95 through $31.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Stucco Ring for Round Wall Vents
SKU SRR
$17.95 View Product This product has multiple variants. The options may be chosen on the product page -
Dryer Vents
Plastic Wall Vent Guard (for use with LH 4″ Wall Vents w/ Movable Louvers)
SKU VG4
$17.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Storm Collar – B Vent
SKU SCB
Price range: $17.95 through $57.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Wall Vent Collar – Aluminum
SKU WVCA
Price range: $17.95 through $28.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Furnace Filter Rack
SKU FR
Price range: $125.95 through $152.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Plumbing Nail Plate
SKU NP
Price range: $6.95 through $8.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Duct Increaser / Reducer – Aluminum
SKU IRA
Price range: $17.95 through $31.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Flue Plug with Crimp – Galvanized
SKU GP
Price range: $17.95 through $62.95 View Product This product has multiple variants. The options may be chosen on the product page -
New Products
Start Collar – Galvanized
SKU STARTC
Price range: $23.95 through $46.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Flue Cap – Aluminum
SKU FCA
Price range: $17.95 through $51.95 View Product This product has multiple variants. The options may be chosen on the product page -
Featured Products
Damper Motor
SKU DM
Price range: $91.95 through $181.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Furnace Filter Rack Base – Galvanized
SKU FRB
Price range: $170.95 through $226.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Flue Plug with Crimp – Aluminum
SKU GPA
Price range: $17.95 through $57.95 View Product This product has multiple variants. The options may be chosen on the product page -
Ventilation Accessories
Plug Reducer – Crimped
SKU PR
Price range: $23.95 through $57.95 View Product This product has multiple variants. The options may be chosen on the product page
Residential Use
Essential for optimizing airflow and ensuring the proper fit of various duct sizes.
Commercial Use
Designed to promote clean air, protect the equipment, and promote energy efficiency by preventing clogging.
Product Highlights
- Square to Round Transition Box
This versatile box is primarily used to attach a ceiling register to your air supply and can also transition square ducts to round ducts in various applications.
- Flue Cap – Galvanized
This cap is designed to cap off or terminate the end of a pipe, offering a solution without a crimp, and is installed over the outside of the pipe. If you need a cap that fits inside the pipe, consider the GP flue plug with crimp.
- Storm Collar
Made from heavy-duty 26-gauge galvanized steel and used with metal pipe flashings to prevent water from running down the pipe. It includes an adjustable tab for easy installation and fits single-wall pipe sizes.
HVAC Accessories Installation Tips
- Proper Placement
Installation will vary depending on the accessory. FAMCO components are designed for easy integration with existing systems.
- Accessory Selection
Choose accessories based on climate, and specific ventilation needs.
- Professional Installation
While some accessories may be installed by a homeowner, professional installation is recommended for complex systems or areas with challenging access.





















