Abstract: A device for mounting a wide variety of different window dressings is described. The device is intended to use conventional mounting brackets to mount the window dressing without the necessity of providing holes to mount the same in the face of the window molding or frame. The device includes either a corner or linear mounting plate which, respectively, may be used either on the right hand or left hand corner, or horizontally or vertically on the frame. Each plate is U-shaped in cross-section and intended to cover the sides and front of the window frame or molding or L-shaped to cover a portion. In one embodiment the portion covering the face can be laterally adjustable. Another embodiment provides flanges for mounting directly on the wall surrounding the window when no molding is present. The front face of the plate may be provided with a plurality of mutually spaced dimensioned cut-outs.