Strainer SW/RSW Clear Acrylic Cover - Side Vent - 4 Inch Strainers - Post-2015 BTUs_150k-199k They have a flow control

They have a flow control available for exact water flow adjustments

ensuring a watertight seal

The heliX is fully CPSC compliant and accommodates sliders up to 275 lbs

Sta-Rite and Waterway

0 parts per million (ppm) to maintain a healthy pool

Strainer SW/RSW Clear Acrylic Cover - Side Vent - 4 Inch Strainers - Post-2015 BTUs_150k-199k They have a flow controlThis is a Fluitrol Clear Acrylic Cover with a side vent for SW and RSW 4 Inch Hair and Lint Strainers manufactured in 2015 and after. Design changes to the strainers in 2009 and 2015 warrant different parts. If you need assistance getting the correct part, please contact our customer service.