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  • BS 493:1970

BS 493:1970

Specification for airbricks and gratings for wall ventilation

BSI Group, 12/14/1970

Publisher: BS

File Format: PDF

$125.00$251.46


Published:14/12/1970

Pages:20

File Size:1 file

Note:This product is unavailable in Ukraine, Russia, Belarus

Class 1 units for external use, and class 2 units for internal use in concrete, clay, cast iron, copper, aluminium steel, plastics and plaster (internal only). Overall dimensions, shape of apertures, unobstructed air space, wall hold, screening, testing of plaster units. Illustrations of typical examples.

All current amendments available at time of purchase are included with the purchase of this document.

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