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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

$132.00$264.16


Standard By:BSI Group , 12/14/1970
Published:12/14/1970
Pages:20
ISBN(s):0580060667
File Size:1 file
Language:English
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.

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