Meridian Modern Series Features: Available in 36" and 42" Fireplace Systems Top Vent Only Ceramic Glass Battery Backup 12 Ft. Wall Switch Wire Junction Box (36" Models) Available in Natural Gas Only 2-Sided Black Ceramic Glass Liner Choice of 4 Crushed Glass Media Colors Choice of Essence, Ventura, Manor or Ensemble Front Optional Fan Kit Optional Heat Management Kits Optional Stone Kit or Driftwood Logs 17,000 - 34,000 BTU / Hour Input NG on 36" Model 18,000 - 36,000 BTU / Hour Input NG on 42" Model Venting: HHT 8" DVP Pipe - Must have a 6" Minimum Vertical Vent before attaching a 90 Degree Elbow to the Fireplace. Approved for use with SLP Pipe - Restrictions Apply (See Installation Manual for Venting Specifications) Approved for use with PVLP-SLP, PVI-SLP-B and PVV-SLP with Power Vent Wire Harness and IFT-RC400 Remote (Order Separately) NOTE: Flame Adjustment Requires RC400 or IFT-WFM