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3M Marine High Strength Repair Filler is for bonding and filling repairs above or below the waterline. 3M filler allows you to achieve professional repair results. These pre-mixed products utilize a benzyl peroxide creme hardener and do not require multiple mixing steps, extenders, fillers or pumps.
Simply add the hardener and these products will be ready to sand within 30 minutes of application. Strength is achieved by a unique vinyl ester formulation designed with short strand fiberglass for semi-structural repairs, above and below the waterline.