Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 51·Table 3.5
Minimum thickness of components for prefabricated appliance chambers
Prefabricated appliance chamber components must meet specified minimum thickness requirements: base 50 mm, side sections 75 mm, back section 100 mm, and top slab/lintel/gather 100 mm.
Table 3.5 Minimum thickness of components for prefabricated appliance chambers
Component | Minimum thickness (mm)
Base | 50
Side section, forming wall on either side of chamber | 75
Back section, forming rear chamber | 100
Top slab, lintel or gather, forming top of chamber recess | 100
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