Easy establish & Efficacy: No tools required! It is short and easy to replace, just taking a number of seconds. By leaving doubtless wholesome and favourable minerals. For optimal performance, it is suggested for you to replace each 6 month or 300 gallon. Compatible models: Compatible with for EDR2RXD1, W10238154, W10413645A, 46-9082. The listed mannequin numbers are just for reference purpose. High-quality Material: Uses high-grade pure coconut shell activated carbon block as material, which points bigger adsorptive means and better performance with microscopic pores. Please note: the physical barely shade distinction or difference, would not impact the use, please do not mind, thank you! Colour:White Material:PP+Coconut shell activated carbon stick Package Contents: 3x refrigerator water clear out Only the above package content, diverse products are not included. Note: Light mirrored image and assorted reveals may cause the colour of the object in the photo a bit various from the real thing. The dimension allowed error is +/- 1-3cm.