Filtro de ventilación (12 pulg.) con trampa de CO2 Protects stored pure water quality by providing advanced protection against airborne contaminants. | Sigma-Aldrich
Lot of 2* No Oil Mini Stainless Mini Breather Vent Filter Fits 8-12mm 3/8 1/2" | eBay
Amazon.com: Vent Register Filters : Tools & Home Improvement