One design to be for manhole with width equal 800mm and another design will be with width 1000mm.
manhole, cast iron manhole cover, manhole cover, sewer cover, drain cover, utility cover, inspection cover, access cover, maintenance cover, street cover, underground cover, trench cover, hatch cover, service cover, sanitation cover, manhole lid, sewer lid, drain lid, utility lid, inspection lid, access lid, maintenance lid, street lid, underground lid, trench lid, hatch lid, service lid, sanitation lid, utility plate, access plate, trench plate, hatch plate
