Alternative filter elements perform equally or better than original manufacturer.

Air/Tak	Air Tek	Arrow	Balston	Deltech	Finite
Flair	Hankison	Norgren	Numatics	Pall Trinity	Ultrafilter
Ingersoll Rand	Domnick Hunter	General Pneumatics	Atlas Copco	Parker Hannifin	Great Lakes
	Watts	Wilkerson	Zander	Zeks