Featuring premium quality: This H98-510-S Tankless Water Heater Filter Part is designed for Rinnai Tankless Water Heater. We ensure longevity by using high-quality, durable materials. Available in a multi-pack, ensuring replacement and long-term use without the need for constant repurchases. Distinctive Item A specially designed tankless water heater filter assembly that ensures effective cleaning for Rinnai h98-510-s water filter assembly. This part is straightforward to install and should be replaced every 2-3 months for best dirt-holding. Spend less than five minutes replacing old or damaged parts to increase efficiency and resume daily activities promptly. Important Note: To ensure that there's no purchasing error, please verify that this product aligns with your tankless water heater circuit before finalizing your purchase. Correct fitment and use assure best results and maximum product lifespan. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Quantity:4Pack Colour:Black Material:Plastic Package Contents: 4 * water purifier cartridge Only 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.