The Drain Company “Stack Drain” Is The Perfect Cost Effect Way To Reduce Standing Water From Your Sealed Surfaced Areas (Concrete, Asphalt, Block Paving, etc). This New & Unique Stack Drain SoakAway System Is Ideal For Drives, Paths, Patios, Conservatories, Swimming Pools, Sports Areas, Gardens, etc. The Stack Drain System Works In A Similar Way To A Traditional SoakAway, By Redirecting Excessive Rainfall Into The Surrounding Sub Soil. The Stack Drain Is Easy To Install & Can Easily Be Installed By An Accomplished DIYer Or Tradesman. This Stack Drain Kit System Comes With 4 Cones & A Top Plate, Additional Cones Can Be Added For Those Bigger Jobs. The Drain Company “Stack Drain” SoakAway System Kit Includes 4 Cones & Top Plate Ideal For Patios, Drives, Path, Gardens, etc Helps Reduce Standing Water On Sealed Surfaces Maximum Load Weight: 1.5 Tonne Cost Effective Easy To Install System 10 Year Guarantee Designed To Work With Standard Drainage Pipes If Required 4 Cone Kit & Top Plate: