American Plumber WRC25HD20 25 Micron 20 x 4.5 Whole House Carbon Water Filter. American Plumber Model Number: WRC25HD20. 50,000 and up. 2.5 – 5.0. WRC25HD 25 Micron 10 x 4.5 Whole House Heavy Duty Carbon Filter. 155247-51, W2010-PR, W2015-PR, WRC2520HD, WRC25HD20. American Plumber is a trusted name in water filtration that offers you peace of mind with their high quality products. The American Plumber WRC25HD heavy duty 20 replacement cartridge reduces chlorine and other contaminants for cleaner and more refreshing drinking water. 4 1/2 by 20 design allows for higher flow rate is ideal for whole house systems and other high flow rate applications. Unique design and 25 micron inner wrap reduces carbon fines. Ideal for whole house systems and point of entry and high flow rate applications. Your filters are guaranteed to be the right fit! Our customer service team is guaranteed to answer your call! You’re guaranteed to find expert help! If you need assistance placing your new order please let us know how we can help!