Make-A-Berm™ allows for spill containment to be installed around difficult to move equipment, spill-prone areas or areas where a standard-shaped berm wont' work. Corner pieces are a key piece to providing a full spill containment solution. The corner pieces are easily attached to the berm pieces with the use of vinyl cement. 4 in and 6 in berm corners allow for a higher capacity containment and work with both regular straight berm sections or with the heavy duty straight berm sections for a higher traffic area. Non-absorbent modified Yellow PVC coated fabric provides a highly resistant barrier to contain oils, gasoline, acids and other liquids. Justrite® Make-A-Berm™ Corner Set, Standard, For Use With: Small Wheeled Carts and Hand Carts, Specifications: Triangular Berm, Open Cell Urethane Foam, -40 to 180 °F, PVC Coated Fabric, Yellow, 12 in L x 9 in W x 6 in H Dimensions