This is a thick filter designed to be inserted into a vent with a lid. Although it is unused, it has been opened to check the contents. Also, the packaging is crumpled, so please understand that it is a stored item. [Product Details] Toyo Aluminum Allerblock Filter Vent with Lid Fill-tan 1 piece How about it for hay fever, asthma, and exhaust gas measures? No smokers, no pets. Instant purchase OK! I will lightly fold it in half and ship it anonymously (❁ᴗ͈ˬᴗ͈)