Downspout Dry Well Storm Water Leaching Kit Part No. SD-DWKIT Manufactured by: Soak Well Manufacturing Perfect For Roof and Gutter Drainage Storm Water Leaching Systems. Solves Foundation, Driveway and Walkway Drainage Problems. Easy Install System Includes: Perforated Snap-Together Polyethelene Shell 1-Piece Lid With Knock-Out "Top" Fitting 3-way T Fitting Brings Liquid In Through Top Center Knockout On Drywell Lid 4" Green Slotted Vent Grate Drain With Riser Fittings To Vent Your Leach Pit Geotextile Fabric Wrap Prevents Sand, Dirt and Debris From Entering The System Basic Installation: STEP 1: Locate Minimum Of 10' From Buildings And Shrubbery STEP 2: Excavate Hole To A Minimum 36"W x 48"D. Add A Minimum Of 4" Of Gravel Base To Excavated Hole STEP 3: Assemble Both Sides By Locking Them Together. Knock Out The Top Inlet Hole and Assemble Fitings STEP 4: Wrap Geotextile Fabric Around Soak-Well STEP 5: Place Soak-Well In One Meter Of Crushed Stone. Connect To 4" Corrogated Drain Line Connection STEP 6: Backfill And Cover NOTE: DO NOT FILL SOAK-WELL WITH GRAVEL OR SAND AS THIS WILL REDUCE THE SYSTEM'S HOLDING CAPACITY.