Blaze 32" 4 Burner W/Rear Burner BLZ-4 Built-In Grill. BLZ-4-NG or BLZ-4-LP. The Blaze 32" 4 burner is the 2nd in line in blaze products, it is designed for those who are serious about grilling, looking for an a stronger and excellent yet effective and with higher capacity. Blaze introduces an affordable commercial style grill that was designed with your outdoor BBQ desires in mind. Blaze gas grills feature precision cut, 304 stainless steel components which bring the promise of lasting durability to your outdoor BBQ! As of March 15, 2016 €” Blaze gas grills have a lifetime warranty that warrants against any defects in the manufacturing & workmanship of the main burners, cooking grids, body, flame tamers, heat zone separators, warming rack, & control valves. While ignition, electronic, & lighting systems are covered for one (1) year after the date of purchase. Grills must be registered within thirty days for the warranty to apply.