NA 041
DIN Standards Committee Heating and Ventilation Technology and their Safety
Standards
[Withdrawn]
DIN 24147-13
DIN 24147-13
Ventilation equipment; shaped pieces; wyes 90° and 60°; symmetrical
Title (German)
Lufttechnische Anlagen; Formstücke; Hosenstücke 90° und 60°; symmetrisch