These plastic blocks are designed for use on the trays at either end of an array. At these points, since there is no overlapping of the trays, there is only a single thickness of plastic to drill fixings through. These blocks are designed to sit underneath the tray and provide an additional layer to improve structural soundness and strength.
We will always provide half and half of the smaller and larger squares, as this is how they’re purchased from GSE. For example, an order of 6 reinforcement blocks will provide you with 3 large and 3 small squares.
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