Inlet Filter Replacement Housing for GilAir Plus Back Catalog number: 811-0940-01-R Manufacturer: SENSIDYNE Availability: In stock 8 pcs Price on request - + Recommended 830-0001-01 Model AP-20S Gas Detection Pump Kit Price on request 811-0503-01 GILIBRATOR FEET, 4-PACK (includes for screws) Price on request 810-0201-02 GilAir-3 Basic (ATEX), Pump only Price on request