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DETAILS

Shipping Type	Order By
Standard Ground Small Parcel FREE - On orders over $25 View Transit Map	7:00 PM CST
Next Day Air (Calculated at checkout)	3:00 PM CST
Standard Ground Freight FREE - On orders over $25	1:00 PM CST

Spun Aluminum Gravity Ventilator, Product # GRS-18-QD

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Spun Aluminum Gravity Ventilator, Product # GRS-18-QD

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Max CFM Intake

CFM

Intake Area

3.42 ft²

Diameter

35 1/2 in

30 x 30 inch base with prepunched mounting holes for easy attachment to roof curb
All aluminum exterior for corrosion-resistant construction
Integral birdscreen to prevent entry of birds and small objects

Shipping Type:

Parcel

$467.46

In stock

6 on Hand

Free shipping

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Max CFM Intake

CFM

Intake Area

3.42 ft²

Diameter

35 1/2 in

30 x 30 inch base with prepunched mounting holes for easy attachment to roof curb
All aluminum exterior for corrosion-resistant construction
Integral birdscreen to prevent entry of birds and small objects

Shipping Type:

Parcel

For natural gravity or positive pressure systems, model GRS 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.

California Residents-

Prop 65 Warning

Specifications

Dimensions
Application
Construction Features
General

Base/Panel Length X Width

30 x 30 in

Curb Cap Size

30 in

Base Height

1 3/4 in

Base Top To Shroud

1 3/4 in

Base Top to Shroud Top

9 3/4 in

Damper Width x Damper Height

18 x 18 in

Height

9 3/4 in

Weight

19 lbs

Overall Diameter

35 1/2 in

Throat Area

1.83 ft²

Intake Area

3.42 ft²

Application

Exhaust General and Clean Air
Supply Air

Housing Material

Spun Aluminum

Includes

Birdscreen

Required Accessory

Roof curb for new installations

Shipping Type

Parcel

Warranty Length

1 Year

Performance

Documents

General

Cut Sheet / Submittal

Quick Delivery Catalog - Gravity Ventilators

Warranty Statement for Gravity Ventilators FGI-FGR, GRSI-GRSR, WIH-WRH and RGU

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Questions & Answers

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Parts & Accessories

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Mounting (4)

Other (2)

GPF-30-G24

Roof Curb for 30 In. Square Base, for High Wind Applications, 24 In. High, Product # GPF-30-G24

$608.05

Model GPF roof curbs are designed for high wind applications and flat roof installations. Constructed of heavy gauge galvanized steel and fully formed on three sides with a single, fully welded seam.

Designed to fit 30" roof curb cap
2-inch mounting flange
Rigid, fiberglass insulation
Welded, straight-sided construction

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GPI-30-G18

Roof Curb for 30 In. Square Base, 18 In. High, Product # GPI-30-G18

$370.95

GPI roof curbs are designed for flat, insulated or non-insulated roof decks. Constructed of 18 gauge galvanized steel and fully formed on three sides with a single, fully welded seam.

Designed to fit 30" roof curb cap
2-inch mounting flange
Rigid, fiberglass insulation
Welded, straight-sided construction

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GPF-30-G18

Roof Curb for 30 In. Square Base, for High Wind Applications, 18 In. High, Product # GPF-30-G18

$564.16

Model GPF roof curbs are designed for high wind applications and flat roof installations. Constructed of heavy gauge galvanized steel and fully formed on three sides with a single, fully welded seam.

Designed to fit 30" roof curb cap
2-inch mounting flange
Rigid, fiberglass insulation
Welded, straight-sided construction

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BD100-18X18

Backdraft Damper, Horizontal Mount, Product # BD100-18X18

$152.85

The BD-100 is a horizontal mount backdraft damper designed to allow vertical airflow up and prevent reverse airflow. The dampers are opened by air pressure differential (assisted by springs) and closed by gravity. The damper features a flangeless, galvanized steel frame with aluminum blades.

Complies with the International Energy Conservation Code (IECC) and ASHRAE 90.1 leakage requirements for non-motorized dampers
AMCA certified for Air Leakage and Air Performance
Width and height furnished approximately 0.125 in. under size

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WD100-18X18

Backdraft Damper, Horizontal Mount, Product # WD100-18X18

$151.94

The WD-100 series are horizontally mounted backdraft dampers designed to allow vertical airflow up and prevent reverse airflow. The dampers are opened by air pressure differential (assisted by springs) and closed by gravity. The damper features a flangeless, galvanized steel frame and aluminum blades.

Width and height furnished approximately 0.125 in. under size

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GPI-30-G12

Roof Curb for 30 In. Square Base, 12 In. High, Product # GPI-30-G12

$285.59

GPI roof curbs are designed for flat, insulated or non-insulated roof decks. Constructed of 18 gauge galvanized steel and fully formed on three sides with a single, fully welded seam.

Designed to fit 30" roof curb cap
2-inch mounting flange
Rigid, fiberglass insulation
Welded, straight-sided construction

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Spun Aluminum Gravity Ventilator, Product # GRS-18-QD

Spun Aluminum Gravity Ventilator, Product # GRS-18-QD

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