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JMK Garage Door Service is a family-owned and operated business established in 1980 by John and Nancy Kinney. We are a full-service garage door company that offers sales, service, repairs and installation on residential and commercial overhead doors and door openers. We serve Upland communities from Rancho Cucamonga to Etiwanda; Alta Loma to Pomona; W. Covina to San Dimas and beyond. Our team of trained and certified technicians provide high-quality work and excellent customer service.