Since Orlo CAB is a complete sound system with wireless connection, you only need a drilling machine with a 75mm hole cutter, a yardstick and a screwdriver. Start by measuring out where you want to place the center of the speaker mesh and make sure the whole speaker fits*.
Use your hole cutter and cut the holes, then screw in the speakers from behind with supplied screws. Then remove the liner on the adhesive tape of the mesh and mount them from the front.
*The speaker boxes can be placed vertical or horisontal depending on the circumstances.