Our Superior flexProp 20/40, 30/50, 30/70 & 40/70 mesh northern Ottawa White frac sand are top rated, consistent performers in the field. With excellent sphericity, crush strength, long-term conductivity & permeability performance results, our “northern white” products will meet your company’s frac requirements for decades to come. Combine that with our flex 100 mesh and flexFrac can supply your proppant needs across the board. Call flexFrac today for more information and information on product samples and availability.