4inch One-way Insulated Breather


  • 11" high with 12.5" wide deck flange
  • 5" I.D. to aluminum wall with .8" insulation thickness
  • 3.5" I.D. between insulated walls
  • Vented 7" wide cap with integral bug screen
  • Made from premium gauge spun aluminum
  • Secured vandal proof cap prevents rain or snow entry
  • Reduces moisture and trapper air within roofing system to prolong roof life
  • 3/4" thickness polyurethane foam insulated walls
  • One-way roof vent with an internal flexible one-way diaphragm
  • Placement depends on the venting area of the breather. With a 3.5" (89 mm) throat opening it is recommended that one breather be installed every 1,000 square feet (929 square metres) of roof area