Up for sale is a lot of 12 brand new quad ground blocks from Perfect Vision. These ground blocks are designed to provide superior performance for both satellite and cable connections and are rated for use up to 3GHz. They are UL certified and feature a high-quality construction that ensures long-lasting durability.

The quad ground blocks are an essential accessory for any home theater or audio system, and they are compatible with a wide range of devices and applications. So, if you're looking for a reliable and high-performance ground block solution, these Perfect Vision quad ground blocks are an excellent choice.