Pentair Buna-N Cover O-Ring | Ultra-Flow Strainer | 39300600Z Main Drains we recommend using our Spa

we recommend using our Spa Refresh formula specifically tailored for smaller water systems

(total system) Grid Length 18-3/8" (measured from collar notch to opposite end) Collar Configuration Single notch with black adapter covering Material High-grade DE filter fabric with reinforced seaming Note from Unicel: Collar has single notch and is covered with a black adapter

Before ordering this board

Built around Pleatco's Point Bonded Pool Filtration Fabric

confirm the header design date the same way

Pentair Buna-N Cover O-Ring | Ultra-Flow Strainer | 39300600Z Main Drains we recommend using our SpaThe Pentair 39300600Z is the OEM replacement Buna N cover O ring for the Ultra Flow strainer, for units manufactured after November 1994. IMPORTANT: VERSION DATE CONFIRM BEFORE ORDERING This O ring is specified for Ultra Flow strainer units manufactured after November 1994. Verify your unit's manufacture date before ordering to ensure correct fitment. IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based