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DAYTON

Gravity Roof Vent, 22 In Sq Base

  • Item# 2RB70
  • Mfr. Model# 2RB70
  • Catalog Page# 3709
  • UNSPSC# 40101502
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  • Shipping Weight 15.65 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

The DAYTON® low-profile gravity roof ventilator is designed for exhaust or supply applications on natural gravity or positive pressure systems. Low-profile hood has a rigid aluminum, corrosion-resistant construction. Built-in curb cap with prepunched holes for easy attachment to roof curb. Integral bird screen.

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Technical Specs

  • Item Gravity Ventilator
  • Fan Size (In.) 12
  • Width (In.) 29
  • Depth (In.) 29
  • Overall Height (In.) 11-3/4
  • Base Width (In.) 22
  • Base Length (In.) 22
  • CFM/Throat Velocity @ 0.050-In. SP Gravity Intake 448/546
  • CFM/Throat Velocity @ 0.050-In. SP Gravity Relief 523/638
  • CFM/Throat Velocity @ 0.100-In. SP Gravity Intake 633/772
  • CFM/Throat Velocity @ 0.100-In. SP Gravity Relief 740/903
  • CFM/Throat Velocity @ 0.125-In. SP Gravity Intake 708/863
  • CFM/Throat Velocity @ 0.125-In. SP Gravity Relief 828/1009
  • CFM/Throat Velocity @ 0.200-In. SP Gravity Intake 895/1092
  • CFM/Throat Velocity @ 0.200-In. SP Gravity Relief 1047/1277
  • CFM/Throat Velocity @ 0.250-In. SP Gravity Intake 1001/1221
  • CFM/Throat Velocity @ 0.250-In. SP Gravity Relief 1171/1428
  • Max. Intake CFM/Throat Velocity 1512/1848
  • Construction Material Spun Aluminum
  • Recommended 8 In. Fixed Curb Item No. 4HX39
  • Recommended 12 In. Fixed Curb Item No. 2RB76
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