We make an adhesive vent register filter. VentMask is designed to be applied by peel-n-stick adhesives making it usable without the need to use tools or remove the vent register. It can be applied to remove dust, pollen, pet and rodent dander, or other allergens built up in dirty A/C or furnace ducting. VentMask has numerous markets from baby health markets, allergy and asthma relief, or travel products markets.