Box, Extension, 4" Square 1/2" & 3/4"(0)No Reviews yet Please log in to see price or purchase this item Quantity discounts available QuantityPrice SKU: 2000171 DESCRIPTION: Extension box, square, 4" x 1/2" & 3/4" knockout.50/Box - Sold by Each This item is IN STOCKCurrent Stock: 58 Details Extension box, square, 4" x 1/2" & 3/4" knockout. Details Back DetailsExtension box, square, 4" x 1/2" & 3/4" knockout. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review