Matrix 3d Wall Panels - Box of 12 - 32 Sq Ft PVC Exterior & Interior Glue on Wall Suitable for Interior and exterior use and around Fireplace, 12 panels per box Surface is rock hard,Superior High impact resistance up to 10x more impact-resistant than plantfiber Rigid with Cushioning hardness-Dent Proof,Excellent fireproof property Dimensions: 19.5 "x 19.5" per tile,Easy and simple installation with uniform edges. Excellent water- repellant, waterproof, moisture proof. Excellent Soundproof qualities.