| 摘要 |
PURPOSE:To obtain a fitting structure simple in execution of fitting and detachment for an air filter by mounting air filter frames on the opening edge faces of lattice-shaped frames via elastic gaskets in which compressed strength-maintaining base materials are buried. CONSTITUTION:Air filter frames 2 by which an air filter 6 is airtightly held are airtightly mounted on the opening edge faces 11 of frame bodies 1 having a U-shaped cross section via elastic gaskets 3. Many frame bodies 1 wherein the opening parts are directed upward are connected mutually, supported and fixed to desired fixing parts or the like with lifting tackles. Extension parts 21 are provided to the filter frames 2 in a form surrounding the elastic gaskets 3. Compressed stressed strength-maintaining base materials 4 are buried in the inside of the elastic gaskets 3. The creep preventing function and the maintaining function of compressed strength for said gaskets 3 are obtained by the base materials 4.
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