Corner is where the low end actually builds up. Move any panel into the corner. Your panel already ships with flat-wall brackets. Swap them for these and the same panel straddles a corner instead Two brackets in 2.5 mm thick 304 stainless, one on each wall. The panel hangs on an M5 screw with an adjusting nut, so you set depth and level after the brackets are up. Useful, because no corner in a real room is exactly 90°. A panel across the corner leaves a triangular cavity behind it. That cavity is what does the low-frequency work. Rated to 40 kg per kit, a bass trap and a surface panel together, with room left over. One Corner Kit mounts one corner. Four corners, four kits. Fits every Massform panel with a metal frame, every size and series. Included: 2 brackets, 2 M5 screws with adjusting nuts. Snapskru dry wall screws. You supply: — 40 kg is the hardware. Both brackets need solid backing; in most rooms the wall is the limit, not the steel.— Ships from our Taiwan studio, separately from your panels, around 2 weeks.