Construction Details


Flange and Gasket fittings are constructed of 26/24 Ga Galvanized Steel. A 1" seamless mounting flange is provided with a PSA gasket for easy installation and low leakage. See the data and submittal sheets for more information.

Options Available


Standard damper with handle and locking wingnut, Insulation Standoff with handle and locking wingnut


Flexible Duct and Sheet Metal Fittings

HVAC and Industrial Hose Products

Sheet Metal Fittings comply with SMACNA Construction Standards

Flange & Gasket

Sheet Metal Fittings

Standard construction is 26 / 24 Ga. Galvanized.

Stainless Steel, Aluminum, other gauges and hardware configurations are available upon request.

Construction Details


Type                    Actual Diameter                      Length                Cut Hole Size

SOC        Nominal Duct Diameter less 1/8 inch       5.5"        Nominal Duct size less 1/4"

SOCD     Nominal Duct Diameter less 1/8 inch       5.5"        Nominal Duct size less 1/4"

CSOC      Nominal Duct Diameter less 1/8 inch       7.5"        Nominal Duct size plus 1 3/4"

CSOCD   Nominal Duct Diameter less 1/8 inch       10"         Nominal Duct size plus 1 3/4"

Spin In

Sheet Metal Fittings

Standard construction is 26 / 24 Ga. Galvanized.

Stainless Steel, Aluminum, other gauges and hardware configurations are available upon request.

Fitting Types


FLSOC - Straight Collar With Flange and Gasket

FLCSOC - Conical Collar With Flange & Gasket

HETO - Rectangular to Round Boot Fitting

Sheet Metal Fittings comply with SMACNA Construction Standards

Fitting Types

SOC - Spin On Collar

CSOC - Conical Spin On Collar

SL    -    Connecting Collars