A vented sub-flashing base intended to add BrandGuard protection beneath compatible conventional louvered or mesh field vents. Do not use this sub-base with BrandGuard dormer vents.

  • Manufacturer model: SB2021
  • Nominal size: 16 x 16 inches
  • Sold individually: one vent or component
  • Configuration: 4-inch Flange Front
  • Manufacturer unit weight: 6 lb
  • Net Free Ventilating Area (NFVA): 86 square inches

Not compatible with BrandGuard dormer vents.

Manufacturer specification drawing

Nominal dimensions identify the model and may differ from the finished flange dimensions or required cutout. Verify the opening, flange and installation requirements before ordering. NFVA is the effective open area available for airflow; it is not a fire-resistance rating.

Manufacturer images show the product family or a representative installation. Size, flange and finish follow the model specified in this listing.

Manufacturer specifications

BrandGuard SB2021 | 16 x 16 in Sub-Base Roof Vent — 4-inch Flange Front

$273.00

  • Materials

    Standard construction: 26-gauge G90 hot-dip galvanized steel. Confirm material and finish for custom orders.

  • Dimensions

    Nominal model size: 16″ x 16″. Check the manufacturer drawing for flange dimensions and required opening. Drawing body depth/profile: 1.5 in; projecting mounting ears/flanges may increase overall size. Drawing face dimensions: 24 x 24 in.

  • Care information

    Follow the model-specific installation instructions. Check the opening, flange fit and fasteners before fitting the vent.

    Manufacturer installation and technical guides

    Model specification drawing (PDF)

BrandGuard SB2021 | 16 x 16 in Sub-Base Roof Vent — 4-inch Flange Front — manufacturer reference image

You may also like