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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
Hanover Lift Systems Steinbach MB
Harbour Door Services Victoria BC
Iller Door Systems Limited Truro NS
J & S Garage Doors Ltd North York ON
J H Secord Enterprises Ltd Markham ON
Jackson & James Overhead Door Services Edmonton AB
JD Doors Ltd. Edmonton AB
Johnston Equipment Co. Ltd. Mississauga ON
JR Overhead Doors (2006) Ltd. Telkwa BC
Kandrea Insulation (1995) Ltd. Edmonton AB
Keir's Overhead Doors Ltd Winsloe PE
Knight Doors and Windows Ltd. Edmonton AB
Lakehead Overhead Door Thunder Bay ON
Lakeview Door Service Vernon BC
Leduc Overhead Door Inc. Leduc AB
Leland Industries Inc. Toronto ON
Lethbridge Door Systems Inc. Lethbridge AB
LiftMaster Mississauga ON
Loading Dock Company (LDC) Limited Mississauga ON
Lynx Industries St. Lambert QC