Ventless Heaters Flint Hill Vent-Free Gas Log Kit w/Contour Burner 30in. 7 Piece by Admin • August 9, 2012 • Comments Off 30 in. 7 Piece Log set kit. 40,000 BTU Includes Burner, Logs, & Embers! Has a precision-ported tube-style burner & requires a minimum of just 12 inches for the firebox depth. Very compact and at an exceptional value!