S420 S34 Variable Speed Metering Pump 100 PSI 40 GPD 120 Volts 3 8 Inch filter length_28 1 8 inches This is the 4 1 2 foot This is the 4 1 2 foot 3 Step Lookout Dual Side Mount Lifeguard Chair that features access from both sides with a smaller 4 x 4 foot platform for pools with limited deck space Colorado Time Systems is the Official Scoring and Timing System of United States Water Polo and LED pump status indicators The ability to accept a 4 20mA signal makes the pump well suited for use with water treatment controls including pH and ORP monitors to maintain proper water chemistry and to treat effluent discharge water