Seal your facility against the freeze with Tri-Fin Polar Seal™, the commercial-grade EPDM perimeter seal that stays flexible from –60 °F to over 200 °F. Engineered with a rubber thermal break that acts as a gasket plus dual fins for double insulation, it delivers unmatched protection—even when one flap is compromised. Available in 100-ft reels or pre-assembled kits with corrosion-resistant 45° retainers designed for uneven surfaces like corrugated or rolling steel doors, Tri-Fin Polar Seal™ ensures a tight, lasting barrier in extreme conditions.action-ind.com+6