Usage Tips:[Higher quality material]:Uses high-grade coconut shell activated carbon block as material, which features better adsorptive ability and better performance with microscopic pores.<br > [Sincere recommendations]: Before use, rinse 4 to 5 gallons of water through the product. Provide cleaner and fresher water by reducing impurities.<br > [Easy to install]: no tools required, just alignment in the right direction.<br > [Service life]: For best filtration results, filter cartridges should be replaced every six months or 200 gallons.<br > Color: White<br > Material: Coconut Shell Activated Carbon<br > Package Contents:<br > 2 x wf3cb water filter<br > Only the above package content, other products are not included.<br > 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.