| 摘要 |
PROBLEM TO BE SOLVED: To provide an extension double floor having good appearance and capable of being applied without a sense of incompatibility on a part of an earthen floor hall in a building having a habitable room with the broad earthen floor, and to provide a double floor panel with entrance rail of which the installation work and the dismantle work for the extension are simple. SOLUTION: This double floor panel M with entrance rail used in the extension double floor is composed of a square panel main body 1, supporting cylindrical parts 2 provided with penetrated threaded holes 4 and respectively fixed to four corner parts of the panel main body 1 in a penetrated state so that lower projecting parts 3 are projected to a rear face side, supporting leg parts 5 engaged with the penetrated threaded holes, brackets 6 respectively fixed to the lower projecting parts 3 at one end, the entrance rail 7 screwed to the other ends of the brackets, and a finishing coating material 8. A top edge part 9 of the entrance rail is positioned at a height same as a surface of the finishing coating material, and a bottom edge part 20 is positioned to form a clearance as a height of supporting leg part adjustment range, with an installation face.
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