450mm inspection chamber for 160mm pipework
450mm internal diameter polypropylene manhole base with 6 number ring seal sockets that accept 160mm drain pipe or fittings, 5 inlets and 1 outlet. Complete with 3 socket plugs for blanking of any un-used inlets. Overall height is 238mm. Maximum depth allow by building regulations is 1.2 meters.
450mm diameter plastic manhole riser x 235mm high
Cover and Frame
450mm clear opening round top manhole cover and frame. Manufactured from polypropylene and load tested to 3.5 tonne, driveway specification. The cover is locked to the frame via 3 fixing screws. Overall dimensions: 550mm diameter x 50mm deep
450mm clear opening round ductile iron manhole cover and frame. Manufactured to BS EN 124, and load tested to B125, 12.5 tonne. Overall dimensions: 555mm diameter x 25mm.