Ultimate Dryer Vent Seal - crm.catalystglobal.com ebfbce
Webthis 4 dryer vent seal has a floating shuttle that stays closed unless there is a load of clothing drying. Webwhen the clothes dryer or bath fan operates, the exhaust air pressure pushes the damper to let the exhaust air escape from the vent. For filling larger vent gaps, foam is the best choice.
Medium to large gaps. A positive seal keeps cold or hot air out as well as unwanted pests. You can easily use the exhaust vent for new.