Aftermarket Skimmer Weir Door 8-3/8" for Hayward SP1070 / SwimQuip U3 — White, Spring-Loaded Foam Float

An 8-3/8" spring-loaded skimmer weir door replacement for Hayward SP1070 and SwimQuip U3 that restores proper skimmer flow and keeps debris trapped in the basket.

This Aftermarket replacement weir door fits the SwimQuip U3 and Hayward SP1070 (SPX1070KHR) style skimmers. Built from white, durable plastic with a foam float and a spring-loaded hinge, the 8-3/8" weir is sized to match OEM dimensions so it seats correctly at the tile line and swivels to regulate surface flow. It’s designed for quick installation and to reduce floating debris re-entering the pool when the pump cycles off.

How easy is it to install this skimmer weir door?

Installation is straightforward and can usually be done in minutes with no specialized tools. For safety and ease, turn off pump and filter before starting, then reach into the skimmer from the top to position the spring-loaded weir into the throat area. Align the flat top toward the pool and the foam float downward so it can seal against the skimmer bumper stop when closed.

• Turn off pump and filter to stop water movement.
• Remove skimmer lid and insert weir at tile line into skimmer throat.
• Ensure flat side faces up, foam float faces down; pull pin release to lock pins.
• Make minor adjustments so the weir hits the built-in bumper stop as it rises.
• Restart pump and verify proper flow and closure when pump shuts off.

What are the exact dimensions and compatibility details?

This replacement weir has an overall length of 8-3/8", a width of approximately 1-1/8", and a height of 5-1/4", matching the common OEM profile for these skimmer models. It’s an aftermarket part intended to work with SwimQuip U3 and Hayward SP1070 (SPX1070KHR) skimmer housings and cross-references parts like R240067. If your skimmer uses a different profile or size, compare measurements before ordering.

• Length: 8-3/8" (critical for seating at tile line)
• Width: ~1-1/8" and height: ~5-1/4"
• Color: White finish to match common skimmer interiors
• Compatible: Hayward SP1070 / SPX1070KHR and SwimQuip U3 (aftermarket fit)

How does the weir door improve skimmer performance?

When installed correctly, the spring-loaded weir helps maintain consistent surface skimming by directing flow into the basket and reducing backflow of debris when the pump stops. The foam float creates a seal against the upper skimmer throat bumper, so leaves and floating debris stay trapped inside the basket rather than washing back into the pool. This reduces cleaning time and lowers the chance of debris bypassing the filtration system.

• Directs surface water into the skimmer basket for better debris capture.
• Foam flotation helps form a reliable seal when the pump is off.
• Spring-loaded hinge provides smooth movement and secure seating.
• Aftermarket fit restores original skimming action at lower cost than OEM.

What should I watch for after installation?

After installation, observe the weir during pump on/off cycles to confirm it opens fully with flow and closes cleanly when the pump stops. If it rubs, sticks, or fails to seal, reposition slightly or check for obstructions and proper pin engagement. Routine checks will keep the weir operating smoothly and prolong its service life.

• Confirm smooth opening and full closure with pump cycles.
• Check that pins engage and the foam float contacts the bumper stop.
• Clear any debris that could block the weir path inside the throat.
• Replace if cracked, warped, or if spring tension fails.

Who is this for: Pool owners and maintenance technicians with Hayward SP1070 or SwimQuip U3 skimmers looking for a reliable, budget-friendly aftermarket replacement to restore proper skimmer function. It’s a practical choice for DIYers comfortable working inside the skimmer housing and for service pros who need a drop-in compatible part to reduce downtime and keep pools free of floating debris.