The 39553 corkscrew stainless steel hanger is hardware for use when installing acoustical melamine foam clouds and baffles for ceiling-mounted cable installation. These are available in two lengths. The shorter 1.5 in long corkscrew hanger is for use when hanging horizontal clouds. The longer 2.9 inch long corkscrew hanger is for use when hanging vertical baffles. Each package contains twelve corkscrew hangers. This is the 1.5 inch Cloud Corkscrew for humid environments in a pack of 12.