SUPERSTRUT® GOLDGALV® flat bracket made of carbon steel. Load ratings vary depending fittings and brackets are used with 12, 14 or 16 gauge channel. 53 lb weight/C. 13/16 inch from end hole spacing, 1-7/8 inch centers hole spacing, 9/16 inch diameter hole size, 1-5/8 inch wide material, 1/4 inch thickness material.