Now Stocking Full and Half Blastgates.  Contact Dana or Jim @ 410-233-6250 or info@tntmfg.com

New Hours 7:00-3:30 Monday - Friday

TNT Manufacturing is a full service spiral duct manufacturer, supplying all of the round duct needs of HVAC and Mechanical contractors.  Stocking a full complement of pipe and fittings allows us to provide timely deliveries to meet your project needs.  We offer a complete package from take-off of the blueprints during the bid process to delivery to your job site.                         

Our fabrication capabilities include, however are not limited to, the following:

• Single Wall Round Spiral Duct and Fittings
• Single Wall Oval Spiral Duct and Fittings
• Dual Wall Round spiral Duct and Fittings
• Dual Wall Oval Spiral Duct and Fittings
• Rectangular Duct and Fittings
• Welded Exhaust Systems
• Kitchen Hood Exhaust Systems
• Custom Metal Fabrication

Materials in which we fabricate products include:

• Galvanized G-90
• Galvanealled (Paint Grip)
• PVC Coated Galvanized (4 x 1 and 4 x 4)
• Stainless Steel (Type 304 and 316)
• Aluminum
• Carbon Steel