Low Temperature Cure Epoxy Curing Agent DH-3239 Hardener DH-3239 maintains a practical curing rate when temperatures drop, supporting winter construction schedules in cold climates. The formulation continues to build hardness and gloss at lower ambient conditions, with full properties reached after a longer cure window. Contractors can extend their working season with confidence. Product Specifications Property Unit Value Model - DH-3239 Color - Gardner color; ≤2 Appearance -