rectangular white plastic flap weir component with a slightly angled smooth surface and cylindrical hinge at the base
white plastic flap weir with attached hinge and warning label against white background

Pentair Flap Weir | FAS 100® Skimmer | 85003200

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Regular price$39.99
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SKU:
85003200
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About This Item

The Pentair Flap Weir (85003200) is the OEM replacement weir door for the Pentair FAS 100® Skimmer. If your skimmer's weir flap is warped, cracked, or no longer floating freely, this direct-fit replacement restores proper skimmer operation.

The weir flap sits at the skimmer throat and acts as a one-way gate — allowing surface water and debris to pass into the skimmer basket while preventing collected debris from washing back into the pool when the pump cycles off. A damaged or stiff weir reduces skimmer efficiency and allows debris re-entry.

Specifications

Pentair Part Number 85003200
Part Name Flap Weir
Quantity Included Each (1)

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair FAS 100® Skimmer — FAS Series FAS100 FAS 100 Skimmer

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

Before ordering, confirm the part number stamped on your existing weir or listed in your skimmer's installation manual. Weir dimensions vary between skimmer models — an incorrect weir will not seat properly and will compromise skimmer performance. If the weir flap is intact but stiff, check that it pivots freely on its hinge pins before replacing the flap itself.

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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