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120 West Hampton Ave, Capitol Heights, MD 20743
P 301.350.5000 F 301.499.3609
"Harris Companies is the Parent Company of RM Thornton Mechanical"

Commercial Mechanical Contracting, Plumbing and HVAC Services in MD, DC, VA

Please feel free to call us (301-350-5000) or use this Request Form to contact us for a quotation on a commercial/institutional mechanical project.
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