Overview Reviews Product Description 3-1/2" x 4" NIP - Galvanized Rigid Pipe Nipple Pipe Size: 3-1/2 x 4" Pipe O.D.: 4" Length Close: 2-3/4" Product Videos Custom Field Condition New Product Reviews Write a Review Write a Review × 3-1/2" x 4" NIP - Galvanized Rigid Pipe Nipple Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *