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Removable
overpanels and transom rails
Removable overpanels and transoms are useful for the
occasional movement of large items, such as plant or machinery,
and can be made to order. Overpanels are fitted with mild steel
dowels (two for a single doorset, three for pairs of doors)
which locate into pre-drilled holes in the frame head and are
secured by security window bolts to the side. Transoms are fixed
using the same type of frame bolts.
Removable Overpanel
Removable Transom
Sliding doors
Leaderflush Shapland can supply leaves for sliding door
arrangements. It is essential to advise us early of sliding door
requirements as the construction must be modified to accommodate
this. These are non fire rated only.
Drop seals
Drop seals can be factory-fitted at the bottom of the door to
close the gap with the floor when the door is closed using a
mechanical system. This may be useful for smoke containment and
low level acoustic control, particularly where the requirements
for disabled accessibility call for an unimpeded floor surface.
Where fitted by others, we must be informed early to adjust the
door construction to suit.
Louvres and air transfer grilles
Fire rated air transfer grilles can be supplied for use within
BWF-CERTIFIRE approved door leaves up to 60 minutes.
Contact our Technical Services Department for advice.
Astragals and angle stops
For pairs of doors, timber astragals may be needed to cloak
meeting stiles for sound reduction (35 RwdB or higher), weather
protection and special situations such as radiation areas. Where
pairs of doors are used with an overpanel but without transom,
steel angle stops are fitted for the doors to close against.
Typical examples are shown below.
Acoustic doorset Astragal
External doorset Astragal - (weather protection)
Steel angle stops
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