These are #11 ceramic covered roofing granules manufactured by 3M. This is for a 18lb bag of SOLID colored granules such as RG 43 Cedar/Shakewood, RG 52 Weatherwood, Desert Tan, RG1 Charcoal, RG87 Slate, RG47 Burnt Sienna/Hickory, RG 37 Chestnut, RG 73 Estate Gray and many more.
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