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Trenwyth - Glazed concrete masonry units
ASTRA-GLAZE-SW®+ glazed units are concrete masonry blocks
which have a thermosetting glazing compound permanently molded to one
or more faces. This glazing compound is cured and heat treated in gas-fired
tunnel kilns thus becoming an integral part of the unit. The glazed facings
are molded in individual molds, assuring dimensional uniformity of the
glazed facing regardless of minor variations in the block.