Looking for the Best Grade 1 Cylindrical Lock Value? Try PDQ Manufacturing's XGT Series Grade 1 Cylindrical Lock — simply the most rugged and durable on the market. Assembled in the USA at PDQ’s Leola, Pa.-based manufacturing facility, it’s fully compliant with Buy American Act requirements, and is backed by a lifetime limited warranty. Let’s talk testing — lever torque tested by an internationally accredited, independent testing lab to exceed 3000 in-lbs. of torque resistance, four times the ANSI/BHMA Grade 1 standard. It is so strong that no clutch is required; and to 4 million duty cycles (also 4 times the ANSI/BHMA Grade 1 standard). Designed to fit into a standard 161 door prep, it’s the perfect solution for retrofit upgrades. Call us for pricing and more information at 800.441.9692.