Envirotech Systems Limited is considered to be a reliable fabricator and producer of superlative Metallic Anechoic Wedges meant for soundblocking and sound inhibiting applications. These stoppers are created for very dedicated testing chambers to provide the correct confines to contain any noise and manage the reflections within. Appropriate for use in kitchens, assembly shops, or off... https://www.envirotechltd.com/metallic-anechoic-wedges