Overview Reviews Product Description Limit module for Overhead Door commercial operator. Part Numbers: 111421.0005, 111421.05, 111421.5 Product Videos Product Reviews Write a Review Write a Review × LIMIT MODULE, X-SERIES, FDO Review Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments * Recaptcha: