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Below Ground Installation Top & Flush Tracking
The cover is retracted through either flush or surface mounted tracking into a storage pit, below deck level. Pit construction (13"/330 mm wide) is made either using concrete blocks or a fibre glass shell, no RSJ lintel is required. A Polymer Lid or Timber Deck housing lid is supplied as standard. Polymer Lids are available in six different colours; Charcoal grey, Battleship grey, Terracotta, Brown, Buff and Off white. Polymer lids are manufactured from 100% virgin, high impact, Polystyrene Resin. There is no maintenance required with this lid system. (Colour Options). Timber Deck Lids are made from a treated (tanalised) 17mm Redwood Pine and have a life expectancy of approximately 20 years. All Timber lids are supplied in their natural colour (slightly greenish in colour, due to the tanalised treatment) , it is recommended that a colour stain is applied to match the surrounding deck areas. Stainless Steel Pans are available to enable you to use the surrounding deck materials e.g. 'floor tiles' or paving. Please note:- a maximum paving/tile depth of 20mm can only be used on this system (See also Stone Lid Adaptor Extrusion for Inwall Tracking). * Stainless steel lid systems are at an additional cost. IMPORTANT NOTE. The 3.5" Dia. Leading Edge Bar does not enter pit housing. All AQM covers must have a leading edge bar to act as a support. The ASTM safety standards also state 'the fabric cover, when in a closed position, must not be able to be lifted by more than 1"'. Inwall TrackingThis method of installation is suitable for new LINER OR CONCRETE, rectangular shaped pools only. Inwall tracking is available for existing pools, if the pool and decking surround are to be refurbished.
Inwall Tracking enables you to conceal the tracking extrusion within the parameters of the pool wall. The cover is retracted through the inwall tracks and enters the pit housing over the pool wall structure, not the coping edge. With this method of installation, the Leading Edge Bar is also less obtrusive, as the bar comes to rest against the pit housing lid! Inwall track installations also require very limited maintenance as the track extrusion is flush with the pool wall therefore limiting the amount of debris that can enter. 95% of the cover is also in contact with the water, thus reducing wear and tear on the slider mechanisms. There are three types of pit housing lids available, Polymer, Timber and Paving/Tile.
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This method of installation is suitable for new or existing pools -
Top & Flush Tracking. 
