Pre-Filter A Fit Model: for Honeywell 50000 series, 17000 series, 18150 series, 40100 series, 40200 sequence HPA100,200,300 collection consoles. Replace points # 38002 (Does now not match HPA towers). Maintain Cleaner and Healthier Home Environment: carbon filter out deodorize the air and entice bigger particles, reward higher high quality air you breathe. Size of for Honeywell Carbon filter out A: 47inch x 15. Each clear out can be lower to make 1-8 pre-filters depending on model. Can be lower to fit, differ hoods and furnace filters. Recommendation: change the for Honeywell pre-filters regularly as needed,usually replace every 2 or 3 months. Shipping List: 2 Packs HRF-AP1 Pre Filters ( can make 1-8 pre-filters reckoning on the model.) and 1pcs Free cleaning brush (can clean your device) Colour:Black Material:cotton Package Contents: 2 * Carbon Pre Filters 1 * clear brush Only the above equipment content, various products aren't included. Note: Light reflection and assorted reveals could cause the colour of the object in the photograph a bit of assorted from the genuine thing. The dimension allowed error is +/- 1-3cm.