CD 791R/SF-GT Recessed Manhole Cover & Frame Clear Opening: 600mm x 600mm x 80mm External Dimensions: 655mm x 655mm x 87mm* External Dimensions Inc Grouting Lugs: 725mm x 725mm x 87mm* *Not including any strengthening supports Technical Data: - Completely galvanised steel - Pre-drilled drainage holes - Double layer of factory fitted specialist membranes - Compatible with CD 556 lifting keys Please note that these are bespoke items, made to order. Depending upon current production loads, there can be a 1 to 2 working day addition to the shipping time you select in the checkout. If you have difficulty clarifying what the clear opening size corresponds to, please refer to the additional image (above). The best way to decide which cover is most suitable for you is by measuring the hole in the ground that is being covered. The CD 791R/SF is suitable for areas of light vehicular traffic. This cover is compatible with CD 556 lifting keys. GrassTop Manhole Covers are a unique product offered only by Recessed Manhole Covers and EcoGrid Ltd. These were developed specifically for gardens and lawned areas so that unsightly manhole covers no longer ruin the surroundings. With pre-drilled drainage holes and a double layer of factory fitted specialist membranes, grass can grow in the recessed tray while the water is gradually filtered through. Not just for grass or turfed areas, GrassTops are also ideal in landscaping applications where the water has to drain through the cover. Using infills of bark chippings, rubber crumb or similar is perfectly acceptable. For gravel installations we recommend the EcoGrid GrassTop Covers to ensure the stone doesn't shift underfoot.
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