Grade X for the Curtis-Toledo Curtis Toledo Filters line is the intermediate-stage general-purpose coalescer in a typical compressed-air filtration train, rated to 1 micron and works 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 Curtis-Toledo OEM specification on dimensional fit and filtration outcome, so it slots straight into the genuine Curtis-Toledo housing with no modification. A like-for-like, Australian-stocked replacement at a meaningful saving against the genuine Curtis-Toledo part, with comparable service life and air-quality outcomes.