These exhaust kits feature a USDA Forest Service approved spark arrester muffler. The 699-01185 kit uses an approved flexible tube section between the manifold and muffler. It is designed for the Camp Power 2800/2500 models for use in travel trailers, short body truck campers or any application where the position of the muffler in kit 541-0618 interferes with bumpers, floors, skirts, brackets, or chassis rails. * Runs one 13500 BTU air conditioner. * Lightweight, compact design that's easy to install. * Front access panel for easy service and maintenance. * Fits truck campers and folding camping trailers. * Gasoline or LP-fueled.This item is a special order part and may take a few additional weeks to receive.