IR Extender / Blaster Help - Is there such a thing? Where to get one?

Hello All,

I am not new to TiVo but I am not much of a pro.
I currently moved into a new house and would like to have all my tivo's in one central location due to the space issue by the TV's, so, I would like to route all Tivos to where my network hub is which is in another room, in a closet, behind a door.

Is there any IR blaster of some sort that I would be able to route through the attic of the house into each bedrooms TV?

I am searched but came up with nothing, so unless my search was...

IR Extender / Blaster Help - Is there such a thing? Where to get one?

IR Extender / Blaster Help - Is there such a thing? Where to get one?