| http://www.w3.org/ns/prov#value | - This straight sidewall section 116 is made of an expanded metal sheet which, as best seen in any of FIGS. 5 a, b, c, d is a wall made up of two spaced apart metal sheets 118, 120 which are bonded together at intermittent points, thus giving the appearance of a plurality of dimples 122 spaced apart on the exterior of the straight sidewall 116.
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