Replacement Liners Are Available For Every Size Of Our Mini And Maxi Manger Trough Planters, Made From Non-woven Polypropylene These Thick Fitted Liners Help Retain Water And Contain Fine Sand And Compost To Prevent Leaching And Offer Protection To The Wooden Planter.thick Polypropylene Linersdifferent Sizes To Fit The Manger Trough Plantersmini Manger - 2ft, 4ft, 6ft, 8ftmaxi Manger - 2ft, 4ft, 6ft, 8fthelps Retain Moisturereduces Leaching Of Nutrientsprotects The Timbersupplied As Single Linerplease Note: Liners Are No Longer Supplied With Corner Loopsn.b These Are Replacement Liners - All Manger Trough Planters Are Supplied With A Liner.