[Higher Quality Material]: Uses high-grade coconut shell activated carbon block as material, which features better adsorptive ability and improved performance with microscopic pores. [Sincere Recommendations]: Before use, rinse 4 to 5 gallons of water through the product. Helps provide cleaner and fresher water by reducing impurities. [Easy to Install]: No tools required; just align in the correct direction. [Service Life]: For best filtration results, replace filter cartridges every six months or after 200 gallons. Color: White Material: Coconut Shell Activated Carbon Package Contents: 2 x WF3CB Water Filter Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3 cm.