| STANDARD SPECIFICATION Gate
Frame
The gate frame is formed from 3mm thick double channel
vertical steel pickets interconnected by 6mm thick solid
steel lattice
bars. The gate frame is top hung from a ball bearing pulley
connected to the picket by zinc plated pulley brackets. At
the bottom, the frame is fitted with zinc plated bottom guide
pieces designed to run in a bottom track. Leading Edge
The heavy-duty leading edge
is fabricated from steel channels with 3mm thick full height
sideplates and is prepared for
locks, latches or interlock beaks. Number 10 bow handles
are fitted as standard. Shutter Leaves
The shutter leaves are rolled from galvanised steel and
are available in the standard width of 152mm with 102, 229
and 305mm versions also available. Top Track
The standard top track from which the shutter is suspended
is constructed from two galvanised steel sections 90mm deep,
bolted together to give a strong smooth running section for
the shutter thus minimising friction. Only a small amount
of headroom is required for the top track and variable packing
is provided to allow adjustment in height during longer term
service requirements. Bottom Track
The bottom guide pieces are retained within a 25 x 25mm
galvanised steel channel bottom track. Fire Resistance
Landing doors are supplied in a fire-resisting version when
specified. The door has been tested to BS 476 Part 22 1987
for up to four hours fire resistance and is certified by
the Loss Prevention Certification Board.
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