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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
Length 23 5/16" Outer Diameter 8 15/16" Top Inner Diameter 4" Bottom Inner Diameter 4" Material 3 oz
🔧 Pro Tip: Measure your existing filter before ordering — confirm 10 1/2" length and 8 1/2" outer diameter match your spa's housing
Longer motor life: Cooler running temperatures can help extend service life under normal operating conditions
Natural Chemistry One Step Brominating Concentrate - 2 lb Bottle
WinterPill®'s patented pre-measured release delivery system effectively helps maintain clear water during the off season
Unicel 18" Partial DE Filter Grid, 36 sq. ft. | PG-1903 Pump Motors Length 23 5/16" Outer DiameterThe Unicel PG 1903 is a single partial replacement DE filter grid for vertical grid DE filter systems with 36 square feet of total filtration capacity. Engineered to Unicel's precise OEM dimensional standards, this partial grid features an open slot collar with two notches for secure manifold engagement and is built with high grade DE filter fabric and reinforced seaming for lasting pressure resistance. IMPORTANT: PARTIAL GRID NOT A FULL GRID This is
