1. HeavyDuty Protection: This 4inch square RV bumper end cap is crafted from sturdy metal to withstand outdoor conditions, protecting your sewer hose compartment from rain, dust, debris, and unexpected bumps while on the road or parked at your favorite campsite. 2. BuiltIn Vent Holes: Thoughtfully designed with vent holes, this end cap helps prevent moisture buildup and allows airflow inside your sewer hose storage area. It keeps things fresh and dry, reducing odors and helping maintain your RV's sanitation system. 3. Shock Resistant Design: Engineered to handle bumps and vibrations during travel, this shockresistant sewer hose cap stays securely in place. Enjoy peace of mind knowing your sewer hose is protected whether you're driving, parking, or setting up camp. 4. Easy to Install: This RV bumper cap fits most standard 4inch square bumpers on motorhomes, trailers, and campers. Simply slide it on and enjoy a snug, secure fit that keeps your sewer hose storage sealed from the elements during every trip.