Protect your plumbing and appliances from sediment and contaminant buildup (think: scale sand and silt) with the Culligan R50-BBSA Whole Home Heavy Duty 1” Water Filter Replacement (2-pack). Featuring coarse-level filtration with its 50 micron rating this water filter with a 4.5” diameter provides you with visibly cleaner filtered water you can enjoy from the comfort of your own home. Made from pleated polyester filter material the heavy duty Culligan whole home water filter provides 4 times the dirt-holding capacity over standard duty 2.5 diameter cartridges and lasts 6 months or 24 000 gallons with a flow rate of 10 gallons per minute. This whole home water filter fits Culligan Filtration System HD-950A and WH-HD200-C and is compatible with most heavy duty whole house water filtration systems. In need of more water filters for your home? Culligan offers a full line of water filtration solutions from under sink filtration to whole home water filter systems to make your water the best it can be—and even better: You can easily install it all on your own.