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The Cal-Royal CON88 Heavy Duty Concealed Overhead Stop Holder is a premium-grade door control solution engineered for high-traffic, heavy-use environments. Designed with a concealed mount and slide track mechanism, this overhead stop and holder is ideal for both interior and exterior doors, including single or double-acting configurations. It features a durable satin stainless steel (US32D) finish, a heavy-duty shock absorber spring that allows 5–7° compression before dead stop, and a 110° maximum opening angle. The CON88 is non-handed, UL listed for up to 3-hour fire-rated doors (stop function only), and includes a complete screw packet for wood and metal door/frame installation. Perfect for commercial and institutional applications, it ensures smooth operation, long-lasting performance, and a clean architectural appearance.