Dear customers, we are on summer vacation from June 27th, 2025 to July 21st, 2025. However, during this time you can still shop at significantly reduced prices, so grab it now!!! After the holiday period the price will be increased again. DUO WATER FILTER HOUSING with vent valve 20" x 4.5" inch size with 1 inch Brass internal thread 2 water filter housings 20" from the 'Big Blue' series with sediment and descaling cartridges for applications where a high flow rate is desired. You can also purchase the following replacement filter cartridges with free shipping: 20" 1 µ sediment cartridge, for information and to purchase please click on the following images This 20" Big Blue® filter is designed for residential as well as commercial and industrial applications. Filter head has built-in pre.
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