Check the listing for details. Primacoustic Broadway Surface Impaler Mounting Clip. Condition: New. Listed at 58.99 USD. Primacoustic surface mount impalers are designed to mount Broadway fiberglass acoustic panels (sold separately) directly onto your wall. This is their most popular mounting system and is ideal for studios and home-theaters. For commercial installations, adding a dab of construction adhesive on the impaler surface will add greater of security. Best of all, unlike spray-on installations, using impalers will not cause serious wall defacement. Primacoustic Broadway acoustic panels may be mounted in various methods to suit your specific application. In addition to using typical screws and adhesives, Primacoustic has developed these impalers to provide you with a simple, quick and effective method of mounting Broadway acoustic panels onto walls.