Mounting frame for a sanitary installation, comprising: a) at least two vertical supports which are set up parallel at a spacing from one another and which aa) are intended for anchoring to a supporting structure of a building; and ab) have a groove on the mutually facing sides; wherein the vertical supports are profiles, for example square hollow profiles, with corners and has a groove at least on each of two mutually opposite sides (12, 14), wherein each groove has, on both sides, undercuts of at least in principle T-shaped or dovetail-shaped geometry; b) at least one fitting plate which is inserted releaseably between the vertical supports and which ba) serves for holding fittings and connection lines thereof; and bb) has a central leg for attaching the fittings or connection lines and, at each of the outer ends, an adapter for connecting to the adjacent vertical support; wherein the central leg, with a vertically rising base surface of the fitting plate between the adapters present at the outer ends, has a bent-over portion which juts off therefrom at the top and bottom in each case, with the result that a shallow U-profile is obtained, wherein the two adapters are formed by bent-over portions of the U-profile that point at a right angle from the longitudinal extent of the central leg into the room; and a grid of first holes is provided in the base surface for fastening various fittings and connection lines, and c) first means for releaseably fastening each adapter of the fitting plate in the groove of the respectively adjacent vertical support that faces the fitting plate, characterized in that d) the adapter is supported on one side in the groove while, on the other side of the groove, a clamping part as first fastening means, which is supported on the adapter, is pressed on; and e) the clamping part can be moved by means of an adjusting member, preferably a screw, wherein the adjusting member is mounted on the adapter. a) at least two vertical supports which are set up parallel at a spacing from one another and which aa) are intended for anchoring to a supporting structure of a building; and ab) have a groove on the mutually facing sides; wherein the vertical supports are profiles, for example square hollow profiles, with corners and has a groove at least on each of two mutually opposite sides (12, 14), wherein each groove has, on both sides, undercuts of at least in principle T-shaped or dovetail-shaped geometry; aa) are intended for anchoring to a supporting structure of a building; and ab) have a groove on the mutually facing sides; wherein the vertical supports are profiles, for example square hollow profiles, with corners and has a groove at least on each of two mutually opposite sides (12, 14), wherein each groove has, on both sides, undercuts of at least in principle T-shaped or dovetail-shaped geometry; b) at least one fitting plate which is inserted releaseably between the vertical supports and which ba) serves for holding fittings and connection lines thereof; and bb) has a central leg for attaching the fittings or connection lines and, at each of the outer ends, an adapter for connecting to the adjacent vertical support; wherein the central leg, with a vertically rising base surface of the fitting plate between the adapters present at the outer ends, has a bent-over portion which juts off therefrom at the top and bottom in each case, with the result that a shallow U-profile is obtained, wherein the two adapters are formed by bent-over portions of the U-profile that point at a right angle from the longitudinal extent of the central leg into the room; and a grid of first holes is provided in the base surface for fastening various fittings and connection lines, and ba) serves for holding fittings and connection lines thereof; and bb) has a central leg for attaching the fittings or connection lines and, at each of the outer ends, an adapter for connecting to the adjacent vertical support; wherein the central leg, with a vertically rising base surface of the fitting plate between the adapters present at the outer ends, has a bent-over portion which juts off therefrom at the top and bottom in each case, with the result that a shallow U-profile is obtained, wherein the two adapters are formed by bent-over portions of the U-profile that point at a right angle from the longitudinal extent of the central leg into the room; and a grid of first holes is provided in the base surface for fastening various fittings and connection lines, and c) first means for releaseably fastening each adapter of the fitting plate in the groove of the respectively adjacent vertical support that faces the fitting plate, characterized in that d) the adapter is supported on one side in the groove while, on the other side of the groove, a clamping part as first fastening means, which is supported on the adapter, is pressed on; and e) the clamping part can be moved by means of an adjusting member, preferably a screw, wherein the adjusting member is mounted on the adapter.