Home / Electrical / Metal Boxes / Octagon Box Extension 1-1/2″ Depth $5.99 Add additional cubic capacity or as an outlet box for surface conduit. Combination screw heads. Self-tapping screws. 4″ x 1-1/2″ deep. CSA Certified and meets the requirements of the Canadian Electrical Code. 1 in stock Octagon Box Extension 1-1/2" Depth quantity Add to cart SKU: 771711202426 Categories: Electrical, Metal Boxes Product ID: 5083 Description Reviews (0) Description Product Details Cubic Capacity: 15 cu-in Housing Material: Metal Number Of Knockouts: 4 Overall Depth: 1-1/2 in Overall Height: 4 in Overall Width: 4 in Features Combination screw heads provide for faster installation Self-tapping screws virtually eliminate stripping Rugged metallic construction Reviews There are no reviews yet. Only logged in customers who have purchased this product may leave a review.