L.B. White Company

L.B. White Company

L.B. White Company, headquartered in Onalaska, Wisconsin, manufactures heating and evaporative cooling equipment sold primarily to agricultural, horticultural, industrial, construction, and event-tent rental end markets. The firm operates as a wholly owned subsidiary of Modine, a publicly traded thermal-management company, and has been in business for more than 75 years. The company produces forced-air heaters, radiant tube heaters, convection heaters, brooders, handheld gas torches, and portable units fueled by propane, natural gas, or kerosene; it also makes evaporative cooling systems, tunnel doors, fans, inlets and vents, filtration products, and plumbing supplies. Products are designed for swine barns, poultry houses, greenhouses, construction job sites, industrial workspaces, and large event tents. L.B. White distributes through a global network with regional contacts serving Canada, China, Europe, Russia, Asia, Africa, Oceania, Mexico, and South America. Confirmed products include the Sun Blast SR 125 radiant heater and the Commander Make-Up Air Units. The parent company, Modine, reported annual revenues of approximately $2.6B in its most recent fiscal year (per Modine fiscal 2025 filings). L.B. White’s own workforce size, AUM, and direct revenue contribution to Modine are not publicly broken out. The firm maintains a service and warranty program covering its product lines, and offers online manuals and maintenance videos. No recent operational event was verifiable from firm sources for the last 24 months. As a manufacturing subsidiary of a publicly traded parent, L.B. White operates without a dedicated family-office structure or disclosed wealth origin. Its structural distinction lies in its role as a specialized industrial OEM embedded within Modine’s thermal-management portfolio, serving controlled-environment agriculture and temporary-structure markets that have growth exposure to indoor farming and event industries.