Each fully enclosed 160 PSI Booster Pump by Cool-Off incorporates upscale features such as a inlet soleniod valve & low pressure shut off switch, usually found only on high pressure pumps and combines them with a weatherproof hard plastic mould capable of withstanding heat, wind, rain, hail and snow. Since many people choose to use the water source closest to their patio, our engineers designed it to be small, powerful and most importantly whisper quiet. All Booster Pumps also come equipped with a built in wall mount on the back of every unit so your pump finally doesn't have to sit on the ground, extending the life of your investment.