Installation Instructions
Page 13
... any object that may result in: Moisture damage to avoid sagging and kinking that may be used for exhausting. 4" (102 mm) 4" (102 mm) Recommended styles: A. Review Vent system chart and if necessary, modify existing vent system to seal all governing codes and ordinances. Housecleaning problems and health problems. See "Venting Kits...
... any object that may result in: Moisture damage to avoid sagging and kinking that may be used for exhausting. 4" (102 mm) 4" (102 mm) Recommended styles: A. Review Vent system chart and if necessary, modify existing vent system to seal all governing codes and ordinances. Housecleaning problems and health problems. See "Venting Kits...