Gravity Vent - Low Profile
EV48x48SS-CA
Gravity Vent with 48x48 inch throat and 68x68 inch hood size. Uses 54.5" W x 54.5" L curb. 19333 CFM at 1200 FPM free area velocity. Includes Snow Screen - Lead Time 7 Weeks.

Gravity vents are an economical choice when a fresh air intake or pressure relief is needed. Model EV is used for exhaust or gravity relief. Model IV is used for fresh air intake.
Gravity Vent - Low Profile
Features & Benefits
  • Aluminum Construction for Base and Hood
  • Model EV features 1 to 1 Ratio and Hood Perimeter Opening to Throat Area
  • Model IV features 2 to 1 Ratio and Hood Perimeter Opening to Throat Area
  • Reinforced Hoods to enhance Rigidity and Resistance to High Winds
  • Curb Corners are Fully Welded
  • Built in Bird Screen
Options
  • Insulated Hoods
  • Filters
  • Protective Coating
  • Motorized Dampers
Performance Data
EV - Exhaust
Model Size CFM - Velocity 1200 FPM
EV12 12 X 12 1500
12 x 24 2933
12 x 54 6333
12 x 120 12200
EV14 14 x 14 1700
14 x 30 3975
14 x 72 8400
14 x 120 14600
EV16 16 x 16 2275
16 x 36 5166
16 x 84 11200
16 x 120 16141
EV18 18 x 18 2933
18 x 42 6508
18 x 96 14933
18 x 120 19125
EV20 20 x 20 3675
20 x 48 8775
20 x 72 12366
20 x 120 20800
EV22 22 x 22 4500
22 x 48 8991
22 x 80 15733
22 x 120 22525
EV24 24 x 24 4833
24 x 54 11625
24 x 84 16533
24 x 120 24300
EV28 28 x 28 6800
28 x 54 13650
28 x 84 19500
28 x 120 28000
EV30 30 x 30 7908
30 x 54 14308
30 x 84 22333
30 x 120 31533
EV36 36 x 36 11733
36 x 54 17258
36 x 84 26033
* 36 x 120 36000
EV40 40 x 42 14025
40 x 66 22225
40 x 96 32000
* 40 x 120 40300
EV42 42 x 42 14308
42 x 66 25108
42 x 96 33958
* 42 x 120 42525
EV48 48 x 48 19333
48 x 66 27600
* 48 x 96 38475
* 48 x 120 49500
EV54 54 x 54 25108
54 x 72 32933
* 54 x 96 43258
* 54 x 120 54933
EV60 60 x 60 31633
* 60 x 72 37333
* 60 x 96 48308
* 60 x 120 60633
EV66 * 66 x 66 37333
* 66 x 80 44516
* 66 x 96 53091
* 66 x 120 66000
EV72 * 72 x 72 44800
* 72 x 84 50400
* 72 x 96 56800
* 72 x 120 72000
IV - Intake
Model Size CFM - Velocity 600 FPM
IV12 12 X 12 1238
12 x 22 2300
12 x 42 5030
12 x 84 9105
IV14 14 x 14 1788
14 x 24 3033
14 x 42 4925
14 x 84 10415
IV16 16 x 16 2200
16 x 30 4133
16 x 60 8000
16 x 108 14800
IV18 18 x 18 2920
18 x 30 4950
18 x 60 9166
18 x 108 16466
IV20 20 x 20 3440
20 x 42 7265
20 x 60 10400
20 x 108 18200
IV22 22 x 22 4320
22 x 42 8340
22 x 80 15165
22 x 108 20000
IV24 24 x 24 4950
24 x 48 10105
24 x 96 19505
* 24 x 120 24575
IV28 28 x 28 7570
28 x 54 12835
28 x 96 23190
* 28 x 120 28520
IV30 30 x 30 7950
30 x 54 14250
* 30 x 96 24300
* 30 x 120 30715
IV36 36 x 36 11135
36 x 60 18415
* 36 x 96 29550
* 36 x 120 36315
IV40 40 x 40 13750
40 x 60 20400
* 40 x 96 32070
* 40 x 120 40535
IV42 42 x 42 15460
42 x 60 22160
* 42 x 96 34315
* 42 x 120 43080
IV48 48 x 48 19800
* 48 x 72 30070
* 48 x 96 38400
* 48 x 120 47950
IV54 * 54 x 54 25450
* 54 x 72 33210
* 54 x 96 43735
* 54 x 120 54860
IV60 * 60 x 60 30520
** 60 x 80 40590
** 60 x 96 48350
** 60 x 120 60470
IV66 * 66 x 66 36570
** 66 x 80 43815
** 66 x 96 52575
** 66 x 120 66670
IV72 ** 72 x 72 45190
** 72 x 84 51720
** 72 x 108 65070
** 72 x 120 72305

* Notes the Hood must be constructed w/ Sloped Hood Option
** Notes the hood will be constructed and shipped in 2 Pcs.

Additional Images
Hood Screen
Additional Information:
 
Operation & Installation Manual
Operation & Installation Manual (French)
Operation & Installation Manual (Spanish)
Submittal Drawing - EV
Submittal Drawing - IV