| http://www.w3.org/ns/prov#value | - The top and side plates 66 are secured to the flanges 63 and angle bars 65, with gasket strips 61 interposed to'provide tight or substantially tight seals, and the lower section 68 of the housing is a pan or shallow box ofpressed steel that is secured to the lower flanges 63 and lower bars 55.
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