Our Square Metal Planters In Anthracite Grey Are Contemporary, Smart And Beautifully Engineered And A Great Choice To Show Off Your Favourite Flowers And Feature Plants And Give Your Outdoor Space An Instant Update.uk Engineered And Manufactured Using 1mm Thick Galvanised Steel With Super Strength Double Folded Panel Construction That Bolts Together10 Year Structural Guaranteelarger Size Planters Include Additional Internal Strengthening Ribs On The Inside Of Side Panels To Prevent Bowingbuilt To Last And Low Maintenance, Just Jet Wash To Maintain A Pristine Appearanceone-piece Side Panels Are Decorated With Capping On Top For Strong Aesthetic Appealgalvanised Steel Is Painted Inside And Out Using Our 7 Stage, State Of The Art, High Temperature Powder Coating Process For A Weather Proof Finish In Stylish Anthracite Greybases Include Drainage Holes That Can Be Plugged If Required With Supplied Bungs.the Planter Bases Can Either Sit Level With The Ground Or Reverse The Base So It Is Inverted To Create A Shadow Gapanthracite Grey Is Ral #7016self Assembly Requiredthese Exclusive Anthracite Grey Square Metal Planters Are Also Available As Rectangle Metal Planters And Trough Metal Planters And In Corten Effect Options Square Metal Planterswe Understand That Some People Want To Insulate Metal Planters (we Can Assist With This If Required) But We Have Seen No Evidence Over The Years We Have Been Selling The Product Which Suggests That There Is Any Detrimental Effect To Plant Health As Long As Watered Appropriately.how Much Soil Will I Need?calculating The Quantity Of Soil You Will Require To Fill Your Planter Is Relatively Simple; You Just Need To Multiply The Length Of Your Planter By The Width And The Height In Metres, Multiply By 1000 And The Figure You Arrive At Is The Amount Of Compost Youll Need In Litres E.g. 0.9m Long X 0.9m Wide X 0.7m High = (0.9 X 0.9 X 0.7) X 1000 = 567 Litres there Is A Calculator On The Rolawn Soil Page T