TETRA - Square Standard

Produced and tested according to EN 124l Cover and frame: ductile ironl Water-tight without bolting through grouted elastomer-sealing up to size 80 x 80 cml Double spring locking bar, automatic-locking, hinge system - fixes cover in open position at 100°, safety catch at 80° prevents accidental closurel Slide rails ensure secure reinsertion of the coverl All types can be additionally bolted for backflow-proofness and additional securityl Ergonomic handling