| 摘要 |
A wall duct 1.002 includes attachment means 1,012, 1.014 adapted to engage a projection I.Oattached to a wall. The attachment can include a longitudinal slot 1.014 on the back of the duct. The slot can include a downwardly projecting rib 1.012. The duct can be attached to a wall by inserting a pair of screws at an appropriate height into a wall, with the screw heads 1.015 projecting to engage the projecting rib. 1.028, 1.012 1.004 1041.008 1.041 -01.014 1.d16 1.024 |
