| 摘要 |
PROBLEM TO BE SOLVED: To provide a casing frame for an opening which makes it possible for one person to assemble vertical and lateral frame materials by one-touch operation and to fix them in the opening. SOLUTION: A vertical frame material and a lateral frame material 2 are provided and a slit in an indoor-outdoor direction is provided in a depth wall 3 of one 10 of the vertical frame material and the lateral frame material 2, while a projecting part is provided on the end face in the longitudinal side of the other 20. The projecting part is provided with a fitting groove in the indoor-outdoor direction. The frame materials are fixed in an opening H in an assembled state wherein the end face in the longitudinal direction of the other frame material 20 is brought into contact with the depth wall 3 of one frame material 10 and wherein the projecting part pierces the slit and the depth wall 3 is fitted in the fitting groove in the indoor-outdoor direction.
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