Dryer Vent Seal 4 inch - Outdoor Dryer Vent Cover Natural Energy Saving, Dryer Vent Covers for Home Exterior

• Dryer Vent Seal - Replaces standard 4 in (10.2cm) dryer vent hoods and louver vents. The hot air pushes an inner plastic cap up, the air and lint blow out and when the air stops blowing, the piece returns to it's resting position to block out unwanted guests and cold or hot air from the outside.
• Save Energy - The dryer vent seal is an energy saving design to keep out hot or cold air.
• Prevent Unwanted Elements- The vent seal keeps out unwanted pests and animals from getting in the vent.
• Easy to Install - The dryer vent seal is easily quick to assemble with pre-drilled holes on base for easy mounting. The dryer vent seal must be installed in a vertical position.

Click here for the installation guide video.