GRSF

Performance Filter

Fan Type

Volume (CFM)

Static Pressure (in. wg)

Elevation (ft)

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SKU	BASE/PANEL LENGTH x WIDTH	THROAT AREA	INTAKE AREA	PRICE
GRSF-10-QD Model / Size: GRSF-10	19 x 19 in	0.57 ft²	1.72 ft²	$175.30	Compare
GRSF-12-QD Model / Size: GRSF-12	22 x 22 in	0.82 ft²	2.52 ft²	$184.56	Compare
GRSF-8-QD Model / Size: GRSF-8	19 x 19 in	0.37 ft²	1.3 ft²	$158.20	Compare

GRSF-10-QD

Spun Aluminum Gravity Ventilator with Flashing Flange, Size 10, Model GRSF-10

$175.30

For natural gravity or positive pressure systems, model GRSF offers excellent performance and durability for intake or relief applications. Featuring an exceptional low silhouette design and rugged construction this model is both efficient and economical.

All aluminum exterior for corrosion-resistant construction
Integral birdscreen to prevent entry of birds and small objects
Built-in flashing flange with prepunched mounting holes for quick and easy installations without a roof curb

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GRSF-12-QD

Spun Aluminum Gravity Ventilator with Flashing Flange, Size 12, Model GRSF-12

$184.56

All aluminum exterior for corrosion-resistant construction
Integral birdscreen to prevent entry of birds and small objects
Built-in flashing flange with prepunched mounting holes for quick and easy installations without a roof curb

Compare

GRSF-8-QD

Spun Aluminum Gravity Ventilator with Flashing Flange, Size 8, Model GRSF-8

$158.20

All aluminum exterior for corrosion-resistant construction
Integral birdscreen to prevent entry of birds and small objects
Built-in flashing flange with prepunched mounting holes for quick and easy installations without a roof curb

Compare

Shop Greenheck GRSF

Model GRSF is an aluminum ventilator designed to be used as an intake or relief unit on natural gravity or negative pressure systems. The GRS has a flashing flange for roof attachment.

Performance Filter

Calculate Air Exchange (CFM)

Enter information into the fields below in order to calculate the CFM (per fan).

Calculate Static Pressure (SP)

The pressure generated by fans in ductwork is typically very small. An accurate measurement of static presure is critical to proper fan selection however. Static pressure in fan systems is typically less than 2" SP, or 0.072 Psi.

Static Pressure Guidelines

Spun Aluminum Gravity Ventilator with Flashing Flange, Size 10, Model GRSF-10

Spun Aluminum Gravity Ventilator with Flashing Flange, Size 12, Model GRSF-12

Spun Aluminum Gravity Ventilator with Flashing Flange, Size 8, Model GRSF-8

Shop Greenheck GRSF

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