The 8 foot section of silver mirror anodized aluminum channel dimensions are 2.25 inches wide by 2.25 inches high by 8 feet long. The aluminum channel has a two piece construction which will make installing the sockets and wire easier. The channel is made with corrosion resistant material and has pre-drilled hole on the bottom section for mounting the end cap. When installing the sockets you will need to figure out what spacing you want and then drill holes in the channel to the desire spacing. Please note brace, end cap and sleeve (if running more than one section) are required and sold separately.