Captivating is the only way to describe these massive fireboxes. Designed for large interior applications, the VRT4500 Custom Series Vent-Free Gas Fireboxes feature a 30 tall opening and beautiful refractory panels for a realistic appearance. Note Choose a beautiful and reliable Superior vent-free log set for best results Not Included, Sold Separately . Includes Mesh fire screens. Features BTU Based on vent-free logs installed. Paneled Firebox. Style Traditional. Venting Type Vent-Free. View Style Front View. White Stacked Brick Liner. 99.9% heating efficiency when paired with a vent-free gas log set. Fully insulated firebox for increased performance in colder climates. Dual left hand/right hand outside air kits available for maximum performance. Compatible with any listed ANSI Z21.11.2 vent-free log set. Rating ANSI Z21.91-2007. 20 year limited warranty. Specifications Overall Dimensions 45.12 L x 28 W x 50 H . Framing Dimensions 45.38 W x 28.25 D x 54.63 H .