Recently, fireplaces with a closed firebox have been gaining more and more popularity. And this is not surprising. After all, a closed firebox provides safety. Sparks or firing corner will not get to the floor or clothes. The door from heat -resistant glass will protect against burns and enters the furnace of random objects. And most importantly, a fireplace with a wood firebox can be used for heating, as the main or as an auxiliary heating system for the off -season period. Its efficiency can be 80 percent or more.