I have a client who has a friend who’s contractor installed radient panels ( elect.,) to the back of the drywall.  The panels heat the drywall and the walls heat the room.  I talked to the guy but he couldn’t remember the product’s name.

Also my client has radient panels affixed to the ceiling, they work nicely (feels like the sun) but  are ugly.  Does anyone know if the mystery product can work in a celling/

Thanks in advance for any and all info. Patrick.

p.s. I tried the local stores/supply houses and they don’t know what I’m talking about.