Designed to fit the Domnick Hunter DHY D Series line, Grade X is the intermediate-stage general-purpose coalescer in a typical compressed-air filtration train, rated to 1 micron — its role is to deliver finer coalescing of residual water and oil aerosol downstream of a Grade P pre-filter and ahead of the fine-stage polishing elements. The Ultramax Systems Grade X element is built to match the Domnick Hunter OEM specification on dimensional fit and filtration outcome, so it slots straight into the genuine Domnick Hunter housing with no modification. A like-for-like, Australian-stocked replacement at a meaningful saving against the genuine Domnick Hunter part, with comparable service life and air-quality outcomes.