3M Fillet Putty 16039 50 Gallon (US) 1 per case

Fillet(TM) is a resilient polyester milled fiberglass reinforced compound designed to be applied between gel coat and laminate to fill corners or sharp transitions thus eliminating air voids. Ultra smooth spreading. Pumpable and has extreme bonding strength. It can be catalyzed with either a liquid Methyl Ethyl Ketone Peroxide (MEKP) 9% active oxygen or with a Benzoyl Peroxide Paste (BPO-50).