Part #: 620 Material: High Density Polypropylene (HDPE) Colors: Green Fits: 6” sewer and drain fittings and NDS 6” Spee-D Basin Spring: Stainless Steel Grade 302 Open Pressure: 1 PSI Open Surface Area: 28.8 Sq. Inches Flow Rate: 1” Head: 124.60 GPM 0.5” Head: 88.10 GPM Weight Per Each: 0.64 lbs. UV inhibitor