Abstract: A suppport frame comprising a primary and secondary frame. The primary frame is U-shaped, having a hole on each end and a disc-like central section with a plurality of pits and a cylindrical projection. The secondary frame has a seat with a circular recess on one end and an engaging device on the other end. The motor assembly is disposed between the tips of the U-shaped frame by screws. The base of the fan, together with the control panel, engages with the engaging device by screws. The seat of the secondary frame with its circular recess receives the cylindrical projection of the primary frame and they are coupled together with a screw. Two sets of a spring and ball are placed respectively within two apertures on the seat of the secondary frame to coincide with the pits on the disc. Thus, the primary frame may be adjusted relative to the secondary frame.