Distribution Boxes Polyethylene 6 Hole and 8 Hole Distribution Box (D-Box) For Septic Drain Fields Specifications Model no. 6/4/3 (6 hole): 23½”L Read More Polyethylene 6 Hole and 8 Hole Distribution Box (D-Box) For Septic Drain Fields Specifications Model no. 6/4/3 (6 hole): 23½”L x 17″W x 17½” H Model no. 8/4/3 (8 hole): 31″L x 17″W x 17½” H Easy to install – light weight Use with 3″ or 4″ drain lines Dry seal connections No mastic or grouting Will not crack or corrode Lasts virtually forever Installation Instructions Select nozzle(s) to be used. Note: Inlet is 3″ higher than outlets. Cut off end of cone at marker line. Use a fine sawblade. Squeeze pipe stub through cone from inside. End of cone will expand over pipe to make friction-fir joint. Install Tee-Y baffle on inlet pipe if required. Lay D-Box completely level in bed of sand or clean soil. Glue bell ends of drainage pipe to pipe stubs. If required by Health Department, connect 2′-3′ of unperforated pipe to each outlet. Check level prior to backfilling. Use ‘speed levelers’ if necessary. Replace snap-on cover. Option: cover with board before backfilling. Notes: For airtight cover, affix 1/16″ thick adhesive closed cell foam tape around underside of cover. No ‘O’ rings required with this model. Download Brochure We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.Ok