Toughness The filter casing is made of stainless steel grade 304 which is durable under hot and cold weather conditions. It would not cause any cracks even after long period of time. High Filtration Filtron filter with gradient pattern and delivery to plumbing system as 3.0 micron water which is clean enough for various household activities. Lock System The interlace between the product body and cover is sealed rubber compound and stainless steel lock. It gives double protections to secure against leakage. Filstrong - The latest technology Minimum filter size 3.0 mircon (10 times finer than a stand of hand). Filstrong made from PPS (Polyphenylene Sulfide). It was heat, acid and alkaline resistant Problem of Normal Outdoor Filtration Casing Cracker Casing Easily Worn Casing Swelling Casing Get Rusty Casing Fade
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