| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust trap capable of being installed by locking it in an upper part opening of a yard catch basin without driving an anchor bolt into an inner wall face of the yard catch basin. SOLUTION: This dust trap is composed of a support plate 51, a shallow type basket 52 which is a dust removing member locked in a peripheral fringe of a hole 511 provided in the support plate 51, and a basketlike filter 53. Four locking pieces 513 are provided at an outer peripheral fringe of the support plate 51.
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