Weir Doors

Find the right replacement weir door (skimmer flap or weir flap) for your pool skimmer box. We list weir doors for Poolrite, Filtrite, Quiptron, Waterco, Astral, Hayward, Paramount, Clark and more, in genuine and generic options. Use the finder and size chart below to match your door.

How to identify your weir door

1. Check the skimmer lid. Most skimmer lids have the brand and model moulded into the top (e.g. Poolrite S2500, Filtrite SKB900, Waterco S75).
2. Measure the door. Measure the width across the door and the height from top to bottom, in mm.
3. Check how it's held in. A spring-loaded door is held by a spring or rod across the skimmer mouth. A hinge-mounted door pivots on pins or clips at its base.
4. Look for a part number. Some genuine doors have a number moulded in, e.g. 20640 (Poolrite S1800) or 20800 (Poolrite S2500 MKII).
5. Match it in the table below. Sizes are within a few mm, so match on width first, then height and style.

Weir door size chart

Approximate sizes in mm (width x height), sorted by width.

Weir door parts

• Nally Waterco Weir Door Clip 624120
• Poolrite / Zodiac Weir Door Hinge / Clip Pin (W20642)
• Aussie Gold PSS635 Latching Assembly for Quiptron (5315400)

Weir door FAQs

What does a weir door do?

It floats at the skimmer opening so a thin layer of surface water, with leaves and debris, is drawn into the skimmer basket. When the pump stops it closes and stops that debris floating back into the pool.

How do I know which weir door I need?

Check the brand and model on your skimmer lid, then measure the old door's width and height. Match those to the chart above or use the Weir Door Finder.

Why won't my weir door float?

The float may be waterlogged or broken, or the hinge or spring may be worn. If the door no longer rises with the water, replace it.

Genuine or generic?

Both suit the listed skimmers. Many listings offer the genuine door and a lower-cost generic made to the same pattern, so you can choose.

Also see our skimmer baskets and vacuum plates.