Lee Mechanical is proud to be part of the Uline H4 Corporate Headquarters project, supporting the construction of a state-of-the-art corporate campus designed for long-term performance and growth.


The new H4 headquarters consists of a 3-story, 359,967 sq. ft. corporate office building and a detached 8,600 sq. ft. central utility plant. This project emphasizes efficiency, reliability, and advanced mechanical systems throughout the facility.

Key Project Highlights:

  • Installation of 920 feet of 4-inch HDPE fused underground gas piping and 2,000 feet of 12-inch fused underground chilled water piping.

  • (2) 500-ton chillers to handle extensive cooling requirements.

  • (4) 72,000 CFM air handling units, each weighing 48,600 pounds.

  • (323) VAV and fan-powered VAV boxes for optimal zoning and temperature control.

  • 14,000 linear feet of snow-melt system piping to maintain safe exterior walkways and entrances.

  • Over 34,000 linear feet of HVAC piping integrated throughout the facility.

  • 186 tons of ductwork fabricated and installed to deliver robust air distribution and indoor climate control.

Lee Mechanical is committed to delivering precision, safety, and superior craftsmanship at every phase of this project, ensuring the mechanical systems meet the highest standards for performance and reliability.