Ventilation fan cap filter A-66-B, pack of 6, made of polyester and polypropylene, easy to replace. - Model: A-66-B - Contents: 6 sheets - Application: Ventilation fan cap filter - Material: Polyester and polypropylene ✿ Unused and new, stored at home. Please understand and purchase. I think it's a thick sheet because it's a manufacturer's product. Shipping: 3 or more sheets are light, so we plan to ship by inexpensive regular mail. #michimichiZakkaya12 Thank you for viewing.