Operating instructions/Installation instructions
Page 38
It reduces the air flow to reduce the environmental impact of the blower. Push the exhaust hose over it. Secure both with a hose clamp. 38 Air venting Reducing Collar (optional accessory) If you would like to less than 400 CFM. CFM requirements. Push the Reducing Collar on the exhaust port of your ventilation system by limiting the CFM output the Reducing Collar can be installed. Check local building codes for max.
It reduces the air flow to reduce the environmental impact of the blower. Push the exhaust hose over it. Secure both with a hose clamp. 38 Air venting Reducing Collar (optional accessory) If you would like to less than 400 CFM. CFM requirements. Push the Reducing Collar on the exhaust port of your ventilation system by limiting the CFM output the Reducing Collar can be installed. Check local building codes for max.