(57) An adjustable security barrier (10) for mounting on one or more surfaces (42, 61,
62) that define a predetermined opening (42). The barrier comprises one or more panels
(11) made of a plurality of fixed bars (12, 13) arranged in a grid-like pattern. At
least some of the bars (12, 13) have an end that, in use, projects towards the one
or more surfaces. Attachment members (31) are provided on selected bars (12, 13),
and are moveable along the length of the selected bar in a direction towards the one
or more surfaces to a fixing position where in use each attachment member (31) can
contact and be fixed to said one or more surfaces. A securing means (28) is provided
for securing each member (31) to its respective bar (12, 13) in the fixing position
thereby to secure the barrier (10) to the one or more surfaces.
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