Trionpartsonline sells select factory specification replacement parts for Trion quality products such as the CAC 500. For more information on the CAC 500 commercial air cleaner visit the CAC 500 product page on the Trion website by clicking here. Additional Trion parts are available by phone order, (800) 884-0002 Option 2. Availability: Usually ships in 2-3 business days. 243155-001$171.00 Availability: Usually ships in 2-3 business days. 1000-3000-0101$71.00 Availability: Usually ships in 2-3 business days. 132309-001$17.00 Additional Trion parts and technical service are available through your local Trion distributor. The location of your nearest distributor can be found at www.trioninc.com or by calling (800) 884-0002 Option 2.