| ROYOL Water 20" Dual Clear Big Blue Filter Housing Set with dual large-capacity housings for high flow, perfect for residential & commercial high-volume water filtration. Made of sturdy PP material for outstanding pressure resistance and long service life. |
| Double-layer NBR O-rings ensure tight thread sealing to prevent leakage; built-in top pressure relief valve enables safe and easy cartridge replacement. Compatible with all 20" Big Blue cartridges: PP, CTO, UDF, composite & scale-inhibitor, customizable for tap or well water. |
| Comes with integrated double-hole metal wall mount bracket for quick installation. Available in brass (3/4",1") and plastic (1",1.5") port options to fit plumbing standards across Europe, America, Middle East & Southeast Asia. Widely used for whole-house pre-filter, well water treatment, restaurant water supply, RO pre-filtration and irrigation; 10" size also available. |
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