Corner-Specific Design (4-Pack) — Suitable for ceiling corners; features 16.5-inch long, 12-inch deep triangular pyramid acoustic foam that effectively absorbs noise ranging from low-to-mid frequencies up through high frequencies—ideal for home recording studios.

This 4-piece set of corner acoustic foam is specifically designed for the junctions where ceilings meet walls. Each piece features a triangular pyramid structure—measuring 16.5 inches along its longest edge and 12 inches in depth—and is crafted from high-density polyurethane foam with a density of approximately 22 kg/m³. The multi-layered reflective surfaces formed by the pyramid peaks and grooves effectively absorb acoustic energy across a broad spectrum, ranging from low-to-mid frequencies (approx. 100 Hz–500 Hz) all the way up to high frequencies (above 2 kHz). They are particularly adept at suppressing standing waves and reverberation, which tend to accumulate in room corners. Installation is simple: merely press the triangular cross-section firmly into the three-dimensional right-angle formed by the ceiling and the two adjacent walls, then secure it using double-sided tape or spray adhesive. Each package contains 4 pieces—sufficient to treat all four upper corners of a small home recording studio—thereby significantly enhancing the clarity of both vocals and musical instruments.