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  9. Gravity Roof Vent, 30 In Sq Base
Dayton Gravity Roof Vent, 30 In Sq Base 2RB72 - main

Gravity Roof Vent, 30 In Sq Base

  • Mfr # 2RB72

  • Zoro # G2438152

product price: $431.99
/ea
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Key Features

Item - Roof Ventilators
Gravity Ventilator
Style - Roof Ventilators
Low Profile
Blade Dia.
20"
Base Size - Roof Ventilators
30 in x 30 in
CFM/Throat Velocity @ 0.050-In. SP Gravity Relief
1435/638
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Specifications

Product Information

MFR #
2RB72
Zoro #
G2438152
UPC #
190735229590
Country of Origin
United States

Dimensions

Blade Dia.
20"
Base Size - Roof Ventilators
30 in x 30 in
Dimension D
3 3/4 in
Dimension B
35 1/2 in
Base Width (In.)
30
Dimension C (In.)
11-1/4
Dimension A
30 in
Dimension C
11 1/4 in
Overall Height (In.)
13 in
Depth (In.)
35 1/2 in
Width (In.)
35 1/2 in
Fan Size (In.)
20
Dimension A (In.)
30
Dimension D (In.)
3-3/4
Dimension B (In.)
35-1/2
Base Length (In.)
30
Base Height
1 3/4 in
Base Width
30 in
Base Length
30 in
Overall Height
13 in
Damper Size
18 x 18 in
Overall Diameter
35 1/2 in
Overall Width
35 1/2 in
Overall Length
30 in

Details

Item - Roof Ventilators
Gravity Ventilator
Style - Roof Ventilators
Low Profile
CFM/Throat Velocity @ 0.050-In. SP Gravity Relief
1435/638
CFM/Throat Velocity @ 0.050-In. SP Gravity Intake
1226/545
CFM/Throat Velocity @ 0.250-In. SP Gravity Relief
3209/1426
CFM/Throat Velocity @ 0.250-In. SP Gravity Intake
2741/1218
Recommended 8 In. Fixed Curb Item No.
4HX41
CFM/Throat Velocity @ 0.125-In. SP Gravity Intake
1938/861
Recommended 12 In. Fixed Curb Item No.
2RB79
Item
Gravity Ventilator
Construction Material
Spun Aluminum
Max. Intake CFM/Throat Velocity
2658/1188
CFM/Throat Velocity @ 0.100-In. SP Gravity Relief
2029/902
CFM/Throat Velocity @ 0.200-In. SP Gravity Intake
2452/1090
CFM/Throat Velocity @ 0.125-In. SP Gravity Relief
2269/1008
CFM/Throat Velocity @ 0.100-In. SP Gravity Intake
1733/770
CFM/Throat Velocity @ 0.200-In. SP Gravity Relief
2870/1276
Exhaust Airflow @ 0.125 in SP
2,269 cfm
Mount Type
Roof Curb
For Air Type
Clean Air
Exhaust Airflow @ 0.250 in SP
3,209 cfm
Exhaust Airflow @ 0.100 in SP
2,029 cfm
Includes
Birdscreen
Maximum Airflow
2,658 cfm
Ventilation Type
Exhaust, Supply
Throat Area
2.25 sq ft
Number of Filters
0
Maximum Static Pressure
1/2 in wc
Housing Material
Aluminum
Supply Airflow @ 0.125 in SP
1,938 cfm
Airflow @ Static Pressure
1,226 cfm @ 0.050 in SP (Gravity Intake), 1,435 cfm @ 0.050 in SP (Gravity Relief), 1,733 cfm @ 0.100 in SP (Gravity Intake), 1,983 cfm @ 0.125 in SP (Gravity Intake), 2,029 cfm @ 0.100 in SP (Gravity Relief), 2,269 cfm @ 0.125 in SP (Gravity Relief), 2,452 cfm @ 0.200 in SP (Gravity Intake), 2,741 cfm @ 0.250 in SP (Gravity Intake), 2,870 cfm @ 0.200 in SP (Gravity Relief), 3,209 cfm @ 0.050 in SP (Gravity Relief)
Housing Material Fabrication
Spun
Assembly
Assembled
Weight
24 lb
Supply Airflow @ 0.250 in SP
2,741 cfm
Resistance Properties
Corrosion Resistant
Supply Airflow @ 0.100 in SP
1,733 cfm
Intake Area
4.43 sq ft

Description

Gravity Ventilator, Exhaust Airflow @ 0.100 in SP 2,029 cfm, Housing Material Aluminum, Assembly Assembled, Compatible Curb Grainger Part Number 2RB79, Compatible Damper Grainger Part Number 4HX41, Mount Type Roof Curb, Number of Filters 0

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