The Catridge, After Filter, For 250/300 CFM is compatible with GEM HLN 250, HLN 030, HLD 300, HLD 350 models. Always cross-check your machine's model number, or contact our support team to confirm fitment. Founded in 1984 and ISO 9001:2015 certified, GEM Equipments Pvt. Ltd. is a Coimbatore-based manufacturer of compressed air dryers, cooling towers, industrial chillers, and compressed air treatment accessories, trusted by 1000+ industrial clients across India. All spare parts on Gemspares.in are genuine and sourced directly from the manufacturer.