| 摘要 |
A filter is disclosed formed of a bag having sidewalls of a semi-permeable material. A debris dam is provided at the upper edge of one of the sidewalls and has a generally cylindrical shape formed from a porous material. The filter is intended for use in conjunction with a drainage system and the bag is mounted to be positioned below the catch basin of such system and the debris dam fits within the overflow slot normally provided. When water or another liquid passes through the filter any solid debris which the liquid might have been carrying is removed and trapped in the filter bag.
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