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Once the jambs are in position for both side walls, you will need to drill holes through the sheet using a 3mm drill bit to fix the jambs
as per diagrams below.
RIDGES FACING UP
Please note: Drill holes from the
inside of the sheet through the
pre-drilled holes in the jambs to
ensure holes line up.
Then fix jambs from the outside
of sheet ensuring the jambs are
on the inside of the sheet.
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