1Universal Fit: The caps are universally designed to fit a variety of pipe sizes ranging from 1 inch to 2?3/8 inches, making them suitable for various RVs, trailers, campers, and motorhomes. 2Improved Ventilation: The practical vent caps contribute to effective sewer ventilation, thus helping to maintain good air quality in your Rv or camper. 3Leak and Odor Prevention: These vent covers effectively prevent any leaks or odors from the sewer pipes, enhancing the overall hygiene and habitation conditions of the vehicle. 4Durable Materials: Crafted with excellent Abs materials, these vent caps can withstand harsh weather conditions, offering a considerable longevity and durability. 5Easy Installation: Simply slide this white Rv plumbing vent cap onto your existing pipe for a snug fit, eliminating the need for professionals and added costs.