Large rectangular brick with a half-round groove down the centre of one face and a matching ridge on the opposite face. Speckled white colour. Sillmax 66 BHHH444 - last brick made at Manuel Brickworks on 22nd November 2001.
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Dimensions:0 - Whole:W 15.2cm (W 6")
Dimensions:0 - Whole:D 7.6cm (D 3")