| 摘要 |
PROBLEM TO BE SOLVED: To make wiring and maintenance inspection working an easy state without exposing on a floor electric wiring for an electric floor panel for forming a heating floor provided on a base floor. SOLUTION: An electric wiring duct 14 comprising a plurality of flat channel material 15 having a pair of right and left inward flanges 16 and a bottom stop hole 18 inserting a stop screw 19 for the base floor 25 on the peripheral part of the heating floor 11 is provided. |
