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

Description

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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