BS 493:1933

Cast iron airbricks and gratings (for use in brickwork).

NORMA vydána dne 26.6.1933

The information about the standard:

Designation standards: BS 493:1933
Note: NEPLATNÁ
Publication date standards: 26.6.1933
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS