It was difficult to install because there was a special size screw on the connector. Forces me to purchase additional parts to hook it up to my water supply. The biggest problem is that in less than 2 years the filter has snapped in the middle and flooded my kitchen floor in the middle of the night! Ouch! It's all plastic, so the production sucks, after all there's a definite lack of quality control and the quality of the materials is bad too. ATTENTION TO THE BUYER! Just skip this defective product.