Using the standard male pipe thread version, Allied Witan Company’s Porous Metal Breather-Vent-Filter can be inserted with little protrusion as a flat, integral part of equipment. This model is a suitable alternative to spaces that are too small to accommodate the standard Porous Metal Filter-Muffler. With its very low profile, the Porous Metal Breather-Vent-Filter is a compact unit most often used as a breather vent filter for cylinders, gear boxes, crankcases, storage cases, storage tanks, and other vessels – wherever pressure equalization is required. An innovative modification is available using a highly porous screen media to allow for unrestricted flow while limiting infiltration of unwanted objects.