The Montigo RP620 gas fireplace is a single side 70,000 BTU power vent dedicated fireplace, compatible with the 300-Series flush exterior, vertical or flush louvered power vents. Characterized by the large scale linear firebox of the R-Series and the premium options of the P-Series. Rock or tile can be installed over the firebox frame for a clean minimalist look.Balanced design in elegant proportions. The single sided R-Series are power vent dedicated fireplaces, characterized by a generous landscape viewing area and linear burner. The single sided model is available in 5 viewing sizes.