Abstract: The invention relates to a device (1) for securing frames (2), comprising a retaining plate (5) and two cooperating clamping angles (6a, 6b), wherein a first clamping angle (6a) and/or a second clamping angle (6b) are arranged on the retaining plate (5) such that they can shift relative thereto, so that a span width of the clamping angles (6a, 6b) can be changed. To ensure a simple handling of the device (1), it is provided according to the invention that the clamping angles (6a, 6b) are arranged on the retaining plate (5) in a rotationally fixed manner and each comprise at least one planar clamping element and at least one connecting piece. The invention also relates to a use of a device (1) of this type. The invention furthermore relates to two methods for securing a frame (2) to a wall (3), wherein if necessary, a first clamping angle (6a) is connected to a retaining plate (5) and the retaining plate (5) is secured to an inner side of the frame (2).