| 摘要 |
PROBLEM TO BE SOLVED: To further improve thermal insulation performance of a stile/rail part of a sash.SOLUTION: A fitting includes a frame body that is mounted in a building opening, and a sash that has a resin stile/rail with a hollow part provided on the indoor side of a metal stile/rail. The resin stile/rail, in which the plurality of hollow parts are stacked in a depth direction and a width direction, is joined to the metal stile/rail in a depth-direction intermediate position of a glass frontage. The metal stile/rail, the indoor side surface of which has an engaging piece for joining the resin stile/rail, has the indoor side surface and inner peripheral side of the engaging piece surrounded by the hollow parts of the resin stile/rail, in the state of joining the resin stile/rail.SELECTED DRAWING: Figure 3 |
