Pre-Filter A Fit Model: for 50000 series, 17000 series, 18150 series, 40100 series, 40200 series & HPA100,200,300 series consoles. Replace parts # 38002 (Does not fit towers).Maintain Cleaner and Healthier Home Environment: carbon filter deodorize the air and trap larger particles, provide better quality air you breathe.Size of for Carbon filter A: 47inch x 15.5inch. Each filter can be cut to make 1-8 pre-filters depending on model. Can be cut to fit, range hoods and furnace filters.Recommendation: change the for pre-filters regularly as needed,usually replace every 2 or 3 months.Shipping List: 2 Packs HRF- Pre Filters ( can make 1-8 pre-filters depending on the model.) and 1pcs Free cleaning brush (can clean your device)Colour:BlackMaterial:cottonPackage Contents:2 * Carbon Pre Filters1 * clean brushOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.