This GMP Tools cable blower accessory (part 37304) is stocked in Millennium's Cable Blower Accessories (Inserts, Proofing Kits) category, supporting installation teams running GMP air-blown fiber equipment on telecom and network construction projects. This component supports proper duct-size matching and seal performance within the blower unit, a key factor in maintaining consistent air pressure during fiber optic cable installation. Keeping this part on hand helps crews stay prepared for a range of duct sizes without switching out full blower units. Millennium Part #526429 (vendor part 37304) ships fast contact Millennium to confirm fit with your equipment.