At Hasty Heat we have several types of fireplace grates for see through double 2 sided multi sided fireplaces.
The most economical being the DS double sided. 
With the DH dual fan double sided being midrange.
The RC rib cage is the highest performing and most deluxe.
As you can see we offer quite a selection of fireplace grate heaters for see through fireplaces. Each offering their own distinct advantages and sizes for you to choose from.