trench sheeting trench sheets accessories piling guides trench lining systems introduction backhoe box manhole backhoe box ks60 trenchbox ks100 trenchbox manhole box ks300 trenchbox dragbox edge protection groundwork equipment hydraulic walers manhole brace shaftbrace tankbrace multibrace super shaftbrace 20m brace 'K' brace extensions bracing struts formwork/falsework system 160 soldier MkII soldier light panel formwork parapet support system scaffold refurbishment propping needling façade retention heavy propping other equipment manhole shutters manhole lifting pins air test stoppers EMV pipe laser culvert puller trench struts adjustable props roadforms ladders skips and trays fencing road/walkway plates trench crossing units dura-BASE mats about us who we are the mabey group depots & works career opportunities service & support get in touch customer portal login products trench sheeting trench lining systems groundwork equipment formwork/falsework refurbishment other equipment ethics policy code of ethics      manhole box The Manhole Box is designed for use in conjunction with the Standard KS100 trenchbox and allows quick manhole construction using trenchbox installation techniques. Maximum depth of excavation with two extension boxes fitted to the base box is 5.4m Four Manhole Box lengths are available: 2.0m, 3.0m, 3.5m and 4.0m All types have 2.5m high base panels and 1.5m high extension panels The range of Manhole Box widths allows the installation of manhole rings up to 2.7m in diameter