Description
1 Premium RV Trailer Bumper Plug End Cap.4" x 4" with 1-1/8" square vent hole; RV/Trailer Bumper Plug End Cap (exact measurement of insert 3-7/8", check inner measurement of your bumper).Center vent hole for air circulation; Fits standard square 4" RV bumpers, conceals sewer hose.Easy, perfect fit with trouble-free installation; Heavy Duty Automotive Grade Thermoplastic