7 -Lb., Sandstone, Polyblend Sanded Grout, Polyblend Grouts Are Polymer Modified Resulting In Denser, Smoother Grout Which Is Easier To Spread & Clean Up, For Grout Joints From 1/8″ (3mm) To 1/2″ (13mm) Wide, For Interior Or Exterior Use, Protected By Moldgard Technology To Resist Mold & Mildew Growth.