| 摘要 |
PROBLEM TO BE SOLVED: To provide a head jamb capable of improving temporary holding properties of a rail member.SOLUTION: A head jamb 20 includes a head jamb member 30 where a recessed groove part 31 having a downward opening is formed and a rail member 21 which is fitted to the recessed groove part of the head jamb member to guide fittings 10, and has a downward opening. An engagement recessed part 35 which is open to a groove width direction is formed in a groove-width-directional corner part of a groove bottom 32 of the recessed groove part of the head jamb member along a longitudinal direction, and a projection piece part 24 which projects outward along a width of the rail member and is hooked by the engagement recessed part is provided at a width-directional upper-end corner part of the rail member. |
