The GO-TO company for maintenance & repair services on every make and model of door With more than 30 years of experience under our belts, BGS is the number one choice for servicing an array of doors and security entrance systems. From automatic and manual revolving doors to security doors and ICU doors, our maintenance and repair services are widespread and thorough. Our growing list of loyal clients is offered affordable maintenance packages and flexible contracts, depending on their needs. Our qualified engineers go above and beyond for our clients, using tried and tested methods to keep your doors safe and secure!