A simple and convenient form of
ventilating warehouses and premises—when it is not required to close
shut off the ventilation—is to fix some of the above pattern Panels
in lieu of lenses, generally along the top row of Stallboards, see pages
Nos. 120, 123, 124, 151 and 153
can be put in without extra charge.
Nos. 121 and 122 are used when
the view through is to be obstructed, and No. 122 so that matches cannot
be passed through.
No. 152 is a Hit-and-miss
Ventilator which can be opened and shut in series.
An extra charge is made for Nos.
122 and 152.
No. 122 is also made in glass
so as to obstruct as little daylight as possible.—Prices on