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CDI is dedicated to professionalism through its one of a kind Certification Program and the support it provides garage door technicians across Canada.

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Company City Province
Lenworth Building Services Mississauga ON
Lethbridge Door Systems Inc. Lethbridge AB
LiftMaster Mississauga ON
Manaras Pointe-Claire QC
Metro Dock (1544584 Ontario Limited) Toronto ON
Newmarket Garage Doors Newmarket ON
Nex Industrial Supplies Inc. Etobicoke ON
Northwest Door Canada Ltd. Surrey BC
Overhead Door (NFLD) Ltd. Mt. Pearl NL
Overhead Door Co of Grande-Prairie (1979) Ltd Grande Prairie AB
Overhead Door Co of Sudbury Sudbury ON
Overhead Door Company of Edmonton Edmonton AB
Overhead Door Company of Lethbridge Lethbridge AB
Powergate Access Systems Inc. Richmond BC
Precision Door Ltd Delta BC
Queen City Overhead Door Inc Regina SK
Red Deer Overdoor Red Deer AB
Rockwood Garage Doors Rockwood ON
Rocky Overdoor Rocky Mountain House AB
Sam's Garage Doors Ltd. Port Coquitlam BC