With it's expansive two-sided opening and stunningly realistic fire presentation, the drt63st see-through provides a harmonious flow from one space to another, inside or outside the home. the drt63st see-through is available in a 40 size, and comes standard with high-definition logs, ceramic ember bed burner, log grate, a sit pro flame ii control system with seamless battery back-up, cip ipi switchable, 6-flame settings with full function thermostatic remote control. power vent model requires use of the power vent kit (purchased separately). all units are equipped with a standard barrier that meets 2015 requirements.BTU: 40,000 - 60,000 Controls: Remote Control Framing Depth: 26-5 16 Framing Height: 47-5 16 Framing Width: 52-1 16 Style: Traditional Venting Type: Direct Vent View Style: See-Through Weight: 383{Feature: Uses 8 11 secure vent rigid direct-vent components Power vent unit uses secure vent 4-1 2 7-1 5 rigid and flexible direct-vent components 20 Year limited warranty {Aesthetics: Dramatic louverless construction gives the fireplace a clean, traditional masonry look and provides the ability to finish right up to the opening Tall ceramic-glass opening provides an exceptional view of the logs and flame The high-definition charred split-oak log set is cast from real wood for an authentic look Platinum embers enhance the glow of the fire Light- and dark-tinted outdoor kits trimmed in stainless steel are available for indoor outdoor application The dark-tinted version provides enhanced ambiance from inside the room by creating an infinity effect while reducing glare from the outside environment {Comfort: Exclusive Secure Vent chimney system provides efficient venting Rated 68% in annual fuel utilization efficiency (AFUE) {Ease of Operation: Full-function remote offers an array of controls, including modulating flame height Gas controls are conveniently located to the side of the fireplace opening for easy installation and operation An adjustable air shutter is included in the burner which allows you to