Assertion: ventilation control brattice | /r/HasProperty | installed
Facets:
Source sentences:
text: When more permanent ventilation control brattices are installed, the present brattices 10 may be removed and twistably folded for storage, in the reverse of the operation shown in FIGS.
text: When more permanent ventilation control brattices are installed, the present brattices 10 may be removed and twistably folded for storage, in the reverse of the operation shown in FIGS.