We've been getting a lot of calls on these recently, especially from dealers on the east coast. They're excellent for cable boxes. RTI used to make something similar, but they discontinued it and now recommend this piece so I figured I'd post it here in case any of you guys are in need.

[Link: avocationsystems.com]

The link pretty much sums it up, but let me know if anyone has any specific questions. Feel free to PM me for pricing.