GoodVac Filter Queen Defender 4000 HEPA Replacement Filter + 2 Carbon Prefilter Wraps Made INCLUDES 1 replacement filter and 2 carbon prefilter wraps HIGH QUALITY REPLACEMENT PARTS: Fits Filter Queen models: Defender 4000, Rac4000, AM4000, Defender 360, 80th Anniversary, D360. Replaces Genuine Part No. 5404011300 and 4404009100. BREATHE IN FRESH AIR: HEPA filter is 99.97% effective at removing particles as small as .3 microns from the air that passes through the filter. Activated carbon absorbs odors and allergens, and keeps the air clean and pure. EASY TO INSTALL: Wrap around the filter cartridge with the carbon prefilter using 2 velcro tabs. And simply remove old filter and replace with GoodVac's high quality air filter. Approximate filter dimension: 7.5" Inside Diameter x 11.25" Outside Diameter x 8" H MONEY SAVING: Change the old, clogged dirty air filter and save electricity by running Filter Queen Air Purifier at optimal performance.