Polaris 3900 Sport Chain (39-126) Style_Vantage this clear lid allows for

this clear lid allows for easy visual inspection of internal components such as gears

Compatible with the following valve gear modules:

Style 2 High Flow Pop Up Head (Tan) – Pentair In‑Floor | SKU 236347

Please note that flaps are not included and must be purchased separately

While also providing enough weight to keep the cleaner on your pool's surface allowing it to do the job it was designed to do

Polaris 3900 Sport Chain (39-126) Style_Vantage this clear lid allows forPolaris 3900 Sport Chain (39 126) This chain was designed to be a part of the drive train system which gives the cleaner the ability to move around the entirety of your pool's surface. Cleaning and sucking up dirt, debris, and other forms of mulch leaving behind a crystal clear looking pool. This is located on the wheel sprocket assembly. This assembly is powered by the gearbox which rotates and moves the chain along, dispersing the rotating motion