ASC (Acoustical Sheetmetal Co)

Location: Virginia Beach, VA

Current Capacity: 550,000+ sq ft

Growth History: Expanded 135k in 2022, 250k in 2025

Professional Power Products Inc. (PPPI)

Location: Darien, WI

Current Capacity: 175,000 sq ft

Growth History: Original plant with multiple buildings and bridge cranes

Freeman Enclosure

Location: Batavia, OH

Current Capacity: 143,000 sq ft

Growth History: Single site, steady growth

Yancey Enclosure

Location: Macon, GA

Current Capacity: 74,000 sq ft

Growth History: Expansion in Mississippi pending

Global Power Components

Location: Milwaukee, WI

Current Capacity: 345,000 sq ft (+476,000 upcoming)

Growth History: Major expansion into former print facility

Robinson

Location: De Pere, WI

Current Capacity: 770,000 sq ft

Growth History: Multiple expansions including 310k welding site

Tomball Controls 

Location: Seguin, TX

Current Capacity: Unknown (unpublished)

Growth History: Boutique operator, employs between 11-50 people

Gulfstream Container 

Location: FL and TX

Current Capacity: FL capacity unknown (unpublished), TX capacity of 50,000 sqft.

Gulfstream Container 

Location: FL and TX

Current Capacity: FL capacity unknown (unpublished), TX capacity of 50,000 sqft.

Hennig 

Locations: HQ in Machesney Park, IL, USA, plus service centers across NA (OK, MI, OH) and support offices in Europe, Asia, and South America

Current Capacity: Over 800k sq ft total production

AVL Hamilton

Location: Hamilton Ontario Canada

Capacity: 233, 623 sqft, 20+ production slots, 14 cranes ranging from 5 to 40 tonnes

AVL Charlotte

Location: Charlotte, NC

Capacity: 232,310 sqft, ~18.75 acres, 30+ productions slots, production start date of September 2025

Generator Source 

Location: Brighton, CO

Current Capacity: 10,000 square feet shop

Growth History: Grew from 1,250 square feet

Steven Engineering

Location: Portland, OR

Current Capacity: 95,000 square feet

Growth History: Revenue $25–49.9M

Andersen Industries 

Location: Adelanto, CA

Current Capacity: 108,000 square feet

Fabcon Inc.

Location: Santa Ana, CA

Current Capacity: 225,000 square feet

Growth History: 26% growth in workforce year over year

Pacific Enclosures Ltd 

Location: Aldergrove, BC Canada