5.5m x 4.5m 99 ECO Shed Base Grids Greenhouse Log Cabin Summerhouse Grass Gravel

You can also cut the grids to fit curves and awkward shapes. Quickly and easily, you can lay your grids on any even surface - grass, sand, etc. The RRP is £6 per grid but they are sold here direct to you from the manufacturer, at wholesale prices.

eBay