18-Inch Flexible Metal Inlet Extension, Guardair model 1448F018. Accessory/replacement part for Gun Vac. Compatible with Guardair model 1548.It's Easy to Choose Guardair, and it's easy to find the right Guardair product to meet your needs. From OSHA compliant Safety Air Guns, to Pneumatic Hand-Held Vacs and Syphon Spray Guns, Guardair has the kind of comprehensive product lines, high quality, and superior value to meet all your needs. Ergonomic designs, timely delivery, experienced Customer Service staff, expert Engineering support and Applications expertise are just some of the many things that Guardair brings to the table. At Guardair Corporation, our number one concern is worker safety. With this focus in mind, we only manufacture safety air guns and spray equipment which meet or exceed all applicable OSHA standards. All Guardair safety air guns meet the OSHA Output Pressure requirement. Many Guardair safety air guns designed for close-in work incorporate a protective air cone for effective chip guarding. Many Guardair safety air guns incorporate proprietary noise limiting features.