Empire Black Horizon Decorative Door Front for 31" Medium Innsbrook Direct Vent Fireplace InsertEmpire Comfort Systems Empire Black Horizon Decorative Door Front for 31" Medium Innsbrook Direct Vent Fireplace Insert (SKU: DFD26HBL) at Urban Supply Inc. Authorized dealer, free shipping over $299. Order today. The Horizon Decorative Front with Faux Doors and Handles gives a beautiful, real fireplace look to your Innsbrook Direct Vent Fireplace Insert. The simple lines and arched top will enhance the look of your fireplace while still leaving you a