SM-3 Replacement Bracket Replacement mounting bracket for ACR's SM-3 Marker Light. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov . Great Product. Item details: Model 9630, Material: Plastic, Color: Black, Unit Count: 1, Item Weight: 204 Grams (7.2 ounces), Package Weight: 7.2 ounces, Item Package Dimensions L x W x H: 9 x 7 x 4 inches. Included Components: Great Product. Number of Items: 1. Warranty Description: Warranty.