| 摘要 |
An improved prefabricated apparatus used for occupying the space between the rafters, and bounded by the roofing material and the finish material on the outer walls of a building, the size of such space being dependent upon the vertical dimension of the rafter supporting the roofing material and the horizontal distance between rafters. The apparatus is provided with telescoping flexible snap-fit shoulders so that it may be adjusted for variations in the nominal (standard) spacing of rafters and rafter warpage. The apparatus is also provided with a tongue so that it may be adjusted to various rafter pitches and/or variations from the nominal (standard) rafter depth.
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