CoreGrade® HD
High-density fiber matrix. Superior screw holding strength. CNC-optimized & hardware-ready.
The Challenge: Many associate imported MDF with low-density cores that chip, swell, or fail under fasteners.
The Solution: CoreGrade™—our engineered, certified core system used in every Intera door and frame.
High-density fiber matrix. Superior screw holding strength. CNC-optimized & hardware-ready.
Moisture-resistant core. Stable in humid environments. Ideal for kitchens, baths, and jambs.
ASTM E84 Class A rated. Fire-retardant core for commercial or residential safety.