Filter Cassette Holder Kit (required when sampling Back Catalog number: 800143 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended SC-4 Tedlar Bag (3L) Price on request 6075-0421-20 Screws, Low Flow Module (Pkg Of 20) Price on request 800510-171-2305 GilAir-3 RP Pump, 5-Pack with Universal 5-Unit Cha Price on request