The pleated high efficiency breather comes with an AN4 bulkhead fitting and nut. AN4 fitting is 7/16 x 20 thread. Filter has hose clamp to tighten lower rubber flange to bulkhead fitting. Rubber lipped base of filter accepts 1/2" fitting and can be adapted to a 1/4" pipe nipple if desired. Can be used on various applications with appropriate plumbing components.
Filter is available separately under part number 465-621330.