I volunteer at an American Cancer resale shop. Someone donated a 36" MDF wall cabinet they want to hang in the back room to replace glass shelves which are there now. The shelves hold laundry soap and supplies so the shelves hold a reasonable amount of weight. I plan to use a french cleat to hang the cabinet but am not sure what fasteners to use to attach the cleat to the metal stud. I have never worked with metal wall studs and read a wide variety, often conflicting, advice on the net. I trust the combined wisdom and experience of SMC. Any advice?