This ProCom Vented Natural Gas Fireplace Log Set offer the most realistic flame patterns and wood stack designs. These vented gas logs must be installed in a fireplace with a fully functional chimney and the flue must be opened at all times when in use, like a wood burning fireplace. These vented gas logs also feature realistic burning ember beds to create a real looking fire. With these high quality vented gas logs, you will enjoy the same glorious fire as a real wood burning fireplace. Product Features • 45,000 BTU • Natural Gas operation • Liquid Propane conversion kit available; Model NVDWA1 • 5 hand painted realistic looking concrete logs • 3 hand painted realisitc looking ember chips • Must be installed in a masonry fireplace or vented firebox • Flue must be open at all times when in use • Includes 1 bag of glowing embers • Includes 1 bag of Vermiculite • Damper clamp included • Minimum Firebox Size Required: 18"? H x 24"? W in front (18"? W at rear) x 15"? D • 1 year limited warranty What''s In the Box?- 5/8" Iron Grate - Qty. 1- Vented U-Burner - Qty. 1- Bag of Vermiculite - Qty. 1- Bag of Glowing Embers - Qty. 1-Damper Clamp - Qty. 1- Hardware Pack - Qty. 1- Ember Chips - Qty. 3- Concrete Logs - Qty. 5