| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a ventilation unit that can selectively have a ventilation function for facilities and a natural ventilation function.SOLUTION: A ventilation unit includes a ventilation box 10 and a frame part 20 provided on an outdoor side plate 11 of the ventilation box 10, and vent holes 60, 61, and 62 can be formed in an outdoor side plate 11, an indoor side plate 12, and an upper plate 13 of the ventilation box 10. Then the ventilation unit can have a ventilation function for facilities by forming the vent holes 60, 61 in the outdoor side plate 11 and indoor side plate 12, and also can have a natural ventilation function by forming the vent holes 60, 62 in the indoor plate 11 and upper plate 13.</p> |
