You Want Our Welding
We design and fabricate truly customized products. All of our welders are certified union professionals. See the difference in our quality and customer service.

WELDED STAINLESS DUCT
Our specialty! We offer TIG welded rectangular and round duct. Fully welded or vanstone rings available. Used for exhaust and collection systems.

BLACK IRON GREASE DUCT
Used in restaurant exhaust systems to capture smoke and grease away from cooking surfaces. Hot rolled A36 steel. Round and rectangular available.

ALUMINUM DUCT
Aluminum duct is a less expensive alternative to stainless steel in high moisture and humidity applications. TIG welded. Round and rectangular available.

GALVANIZED DUCT
Typically used for collection systems. We offer MIG welded rectangular and round duct. Fully welded or vanstone rings available.

TYPE II HOODS
Custom built for your project. Depending on your application, we fabricate type II hoods out of stainless, galvanized, or aluminum. Fume hoods capture heat, steam, or fumes in commercial or industrial exhaust systems.

RTU CURBS
We fabricate curbs for RTUs, MAUs, and AHUs. Adjustable pitch and standard available. Built to your unit’s curb spec. Custom height options available to meet your local building codes.

FAN CURBS
For general exhaust applications. Fabricated from a minimum 18 gauge G90 steel with fully welded construction. Curbs are made to order. Finished height determined by customer. Damper trays and security bars available.

EQUIPMENT RAILS
Mounting pedestal for roof mounted HVAC equipment. Made to order. 2’x4’- 2’x12’ nailer size available. Customizable length and height.

WEATHER CAPS
For industrial exhaust applications. Can be fabricated out of stainless or galvanized. Drawband or angle iron ring connection available.

CURB CAPS
Permanently cover obsolete roof curbs. Crossbreak prevents water from settling on the cap. Galvanized or stainless available. Order with or without insulation.

CUSTOM FACILITY SOLUTIONS
Our design team will work with you to create fully customized, welded facility services. We custom build carts, tables, shelves, tanks, etc. to help your facility run safely and efficiently.

WELDED STAINLESS DUCT
Our specialty! We offer TIG welded rectangular and round duct. Fully welded or vanstone rings available. Used for exhaust and collection systems.

BLACK IRON GREASE DUCT
Used in restaurant exhaust systems to capture smoke and grease away from cooking surfaces. Hot rolled A36 steel. Round and rectangular available.

ALUMINUM DUCT
Aluminum duct is a less expensive alternative to stainless steel in high moisture and humidity applications. TIG welded. Round and rectangular available.

GALVANIZED DUCT
Typically used for collection systems. We offer MIG welded rectangular and round duct. Fully welded or vanstone rings available.

TYPE II HOODS
Custom built for your project. Depending on your application, we fabricate type II hoods out of stainless, galvanized, or aluminum. Fume hoods capture heat, steam, or fumes in commercial or industrial exhaust systems.

RTU CURBS
We fabricate curbs for RTUs, MAUs, and AHUs. Adjustable pitch and standard available. Built to your unit’s curb spec. Custom height options available to meet your local building codes.

FAN CURBS
For general exhaust applications. Fabricated from a minimum 18 gauge G90 steel with fully welded construction. Curbs are made to order. Finished height determined by customer. Damper trays and security bars available.

EQUIPMENT RAILS
Mounting pedestal for roof mounted HVAC equipment. Made to order. 2’x4’- 2’x12’ nailer size available. Customizable length and height.

WEATHER CAPS
For industrial exhaust applications. Can be fabricated out of stainless or galvanized. Drawband or angle iron ring connection available.

CURB CAPS
Permanently cover obsolete roof curbs. Crossbreak prevents water from settling on the cap. Galvanized or stainless available. Order with or without insulation.

CUSTOM FACILITY SOLUTIONS
Our design team will work with you to create fully customized, welded facility services. We custom build carts, tables, shelves, tanks, etc. to help your facility run safely and efficiently.
💨 Need custom blast gates for your next dust collection or ventilation project?
At Madon Sheet Metal, we fabricate blast gates—built to your specs, delivered fast, and union-made.
✔️ Precision welded
✔️ Custom sizing
✔️ Fast turnaround
✔️ Yellow Label union shop
Whether you`re upgrading one line or outfitting a whole facility—we’ve got you covered.
📖 Read our quick guide: https://madonsheetmetal.com/blast-gate/where-to-buy-blast-gates-a-quick-guide-for-contractors-and-facility-managers/
📞 Need a quote? Call (224) 300-7995
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🚨 Know someone who needs custom sheet metal work? Send them our way—and we’ll send you $50! 💰
Our new Referral Program is live! When a first-time customer places an order with Madon Sheet Metal, you get rewarded. It`s our way of saying THANK YOU for helping us grow with great people.
✅ Easy to join
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✅ Applies to curb adapters, ductwork & custom fabrication
Start earning today 👉 madonsheetmetal.com/refer-and-earn
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