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Gravity Vent, 48 In, Base 54 1/2 In Sq

  • Item# 1WDN7
  • Mfr. Model# 1WDN7
  • Catalog Page# 3709
  • UNSPSC# 40101604
Gravity Vent,48 In,Base 54 1/2 In Sq close
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  • Shipping Weight 493.0 lbs.
Country of Origin USA Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Product Details

Designed for nonpowered ventilation, or for use in conjunction with powered exhaust, supply, and reversible fans. Strong, weathertight hood is constructed of interlocking, arched panels. Bird screen and hood come preassembled.

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Technical Specs

  • Item Gravity Ventilator
  • Fan Size (In.) 48
  • Width (In.) 90
  • Depth (In.) 90
  • Overall Height (In.) 42-1/2
  • Base Width (In.) 54-1/2
  • Base Length (In.) 54-1/2
  • CFM/Throat Velocity @ 0.050-In. SP Gravity Intake 7300/456
  • CFM/Throat Velocity @ 0.050-In. SP Gravity Relief 7695/481
  • CFM/Throat Velocity @ 0.100-In. SP Gravity Intake 10,324/645
  • CFM/Throat Velocity @ 0.100-In. SP Gravity Relief 10,882/680
  • CFM/Throat Velocity @ 0.125-In. SP Gravity Intake 11,542/721
  • CFM/Throat Velocity @ 0.125-In. SP Gravity Relief 12,167/760
  • CFM/Throat Velocity @ 0.200-In. SP Gravity Intake 14,600/912
  • CFM/Throat Velocity @ 0.200-In. SP Gravity Relief 15,390/962
  • CFM/Throat Velocity @ 0.250-In. SP Gravity Intake 16,323/1020
  • CFM/Throat Velocity @ 0.250-In. SP Gravity Relief 17,207/1075
  • Max. Intake CFM/Throat Velocity 20,766/1240
  • Construction Material Galvanized Steel
  • Recommended 6 3/8"H Roof Curb Item No. 3C216
  • Recommended 12 3/8"H Roof Curb Item No. 2ZV86
  • Recommended 12 In. Fixed Curb Item No. 3AZJ6
  • Damper Size (In.) 49 x 49
  • Recommended Gravity Backdraft Damper Item No. 6WRK8
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