• HID Systems

• Hadco Lighting

• Hanover Lantern

• Helios Lighting Ltd.

• Herwig Lighting Co.

• Hetherington Industries Inc.

• High End Systems

• Hinkley Lighting

• Historical Arts & Casting, Inc.

• Holophane Canada Inc.

• Holophane Corp.

• Hubbell Canada Inc.

• Hubbell Lighting

• Hunt Control Systems Inc.

• Hunter-Knepshield Co. (Hunters Trail)

• Hydrel Corp.

• Idaho Wood Industries

• Incon Lighting

• Infinity Lighting, Inc.

• Intelligent Lighting Controls

• Interlectric Corp.

• International Chimney Corp.

• J W I

• J.H. Baxter & Co.

• JJI Lighting Group

• JRA