Hunter Industries - I2004SS - 4 in. Stainless Steel Pop-up Rotor; with Check Valve From The Frog The ProSeries 100 design is

The ProSeries 100 design is debris tolerant and uses a self-cleaning metering screen

overcoming most line-of-sight obstructions

which means there won’t be any uncovered spots of floor in the room

FNPT suction and 1 in

while a red indication means protection has diminished and the unit should be replaced

Hunter Industries - I2004SS - 4 in. Stainless Steel Pop-up Rotor; with Check Valve From The Frog The ProSeries 100 design isBrand: Hunter Industries SKU: I20 04 SS Product Overview The Hunter I20 04 SS is the stainless steel riser version of the 4 inch I 20 gear drive rotor. It combines a 4 inch pop up height, 3 4 inch female NPT inlet, adjustable 50 to 360 degree arc, standard drain check valve, and stainless riser sleeve for added durability in areas exposed to frequent traffic or demanding site conditions. Part circle and full circle operation are built into the same