| 摘要 |
A section of waterproof trunking (30) has an elongate tubular member (32) of rectangular cross section, two opposing sides of which have holes (34) with screws therein. These holes act as means for attaching member (32) to further members (32a) and/or (32b). Member (32) also has an aperture (36) in one side. Aperture (36) has a length L1 which is substantially less than the length L2 of member (32), this length being measured axially along member (32). Aperture (36) also has dimension L3 which is measured perpendicular to L1 and L2, and this length is equal to or slightly less than length L4, the external dimension of member (32) measured -in the same direction. Trunking section (30) also has closure means (38) for the or each aperture (36). Closure means (38) has a cover plate (40) which is attached to member (32) by use of screws (42) through holes (43) and into threaded holes (44). Plate (40) is also provided with a neoprene sealing gasket (46).
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