THE SAFEST DRYER VENT COVER ON THE MARKET. Eliminates airflow obstructions like birds and the need for dryer vent cover screens that quickly collect lint, violate international building codes, and cause thousands of house fires each year in the USA. ENERGY-SAVING DOUBLE DOOR DESIGN eliminates energy-draining drafts from entering through the dryer vent cover and into your home. The NO-PEST Vent Cover has a magnetic door retention system to prevent dryer vent cover doors from flapping in windy conditions, the outdoor dryer vent cover seals tightly to keep insects and rodents out. EXTREME EFFICIENCY: Our exclusive DOUBLE DOOR DESIGN creates a self-cleaning vortex around the outside of the vent cover that not only prevents lint buildup but creates the most efficient exhaust flow that dries your clothes faster, saving your family time, money, and ensuring your dryer operates optimally. MADE IN THE USA: Our vent cover is manufactured in Zeeland Michigan, and was designed because we couldn't find a solution for the birds getting into the vent covers on our own houses. Because our cover is made with American plastic resin and the highest quality of UV resistance, the original No-Pest Vent is still on the apartments where they were originally installed 15 years ago. MEETS ALL BUILDING CODES: The No-Pest Vent outdoor dryer vent cover meets all international building codes for a dryer vent cover & by NOT having a dangerous lint-collecting screen that can lead to fire hazards, it is the safest pest control dryer vent cover.