The 91638 Main Burner Tube is designed to fit Atwood/Dometic RV water heaters with a 6 gallon LP gas capacity. This silver metal burner tube, model name Burner Tube 233, has dimensions of 5.51x3.54x2.36 inches and weighs 0.38 pounds. It is a reliable and essential part for maintaining and repairing your water heating system, ensuring optimal performance and efficiency. Perfect for those looking to replace or upgrade their current water heater burner tube, this product is a practical and high-quality choice for home improvement and maintenance needs.