Unicel S-1900 Circular Spin Filter Grid - 19 Inches pool-dimensions_14x28 This is a Hayward SPX0507D

This is a Hayward SPX0507D Back Retaining Rim for SP0607 PVC Niches

The overall platform area measures 40-3/8 inches x 26-3/4 inches and is located 3

5 inch Pressure Switch for their vertical commercial pool heaters

and reaction off the platform

The ORP measures from -999 to 999 mV with an accuracy of plus/minus 4 mV

Unicel S-1900 Circular Spin Filter Grid - 19 Inches pool-dimensions_14x28 This is a Hayward SPX0507DThis is a Unicel S 1900 Ciricular Spin Filter Grid, 19 Inches in diameter with a 2 1 2 inch center. This round grid FC 9910 is the correct replacement for the Unicel S 1900. This filter grid is made from heavy duty polyester. This grid has more pleats to improve filtering capacity.