Precision drill jig designed for curtain wall vertical mullions and horizontal-to-vertical shear block joinery in 3150/3250 series systems. Use this vertical mullion drill guide to speed installation, ensure consistent hole placement, and reduce rework on commercial curtain wall assemblies.
Most shipping weights are approximate and have not been verified. If you need exact weight to determine shipping costs before ordering, contact CRL Customer Service. Product images are representative; colors may vary by monitor and video card.

