Brett Martin's heavy duty Lids and Frames offer a reliable and secure option for residential applications since they are made of resilient and hardy polypropylene. The sturdy webbed construction results in a significantly stronger lid with a maximum loading capacity of 50kN. (when supported by a concrete plinth).
With Brett Martin SfA7 Adoptable and Non-Adoptable Inspection Chambers, the Lids and Frames are completely compatible. The Lids and Frames have been certified as meeting Building Regulations and being tested to EN124 A15.
With Brett Martin SfA7 Adoptable and Non-Adoptable Inspection Chambers, the Lids and Frames are completely compatible. The Lids and Frames have been certified as meeting Building Regulations and being tested to EN124 A15.