
Built to fit.
Made to last.
Custom ductwork, precision fittings, and commercial kitchen hoods. Crafted by Manuel Diaz and his sons, right here in Kennewick.


Custom ductwork, precision fittings, and commercial kitchen hoods. Crafted by Manuel Diaz and his sons, right here in Kennewick.
01Round spiral pipe and matching fittings manufactured in Kennewick, with diameters from 6 to 42 inches. Discuss single-wall, lined and double-wall options for your HVAC project, connection details and required material.
02Custom rectangular duct and fittings for commercial and residential HVAC projects across the Tri-Cities and our 120-mile service area. Choose single-wall, lined or double-wall construction with materials and connections suited to your plans.
03Custom elbows, taps, square-to-rounds and transitions that connect your duct system. Pro Duct fabricates lined and unlined fittings for Tri-Cities projects, with dimensions, orientation and connection styles reviewed before your order is made.
04Lined and double-wall ductwork for projects with defined thermal, acoustic and construction requirements. Pro Duct fabricates round and rectangular assemblies, with insulation, dimensions and connections reviewed against your project specifications before production begins.
05Base cans, custom filter cans, inline filter boxes and register boxes fabricated around your equipment and duct connections. Share dimensions, filter requirements and access needs with our Kennewick crew to begin your custom order.
Product illustration
06Commercial kitchen hood and exhaust projects for restaurants and food-service spaces in the Tri-Cities. Pro Duct brings sheet metal fabrication and installation capability to projects that coordinate the hood, ductwork, exhaust fan and kitchen layout.
07Welded grease duct fabrication for commercial kitchen exhaust projects in Kennewick and the wider Tri-Cities region. Share your approved system details so Pro Duct can review materials, routing, connections and the required fabrication scope.
08Custom flashing, drain pans, chimney caps, metal caps and formed sheet metal for commercial and residential projects. Bring Pro Duct your dimensions, a sketch or drawings to discuss a part made for the application.
From a complete duct package to a single custom fitting, send us your dimensions and project requirements.

Made-to-order fittings from our fabrication shop.
At Pro Duct, Manuel Diaz and his sons bring a hands-on approach to sheet metal fabrication. They work as a professional crew, with a shared focus on careful workmanship and the details your project needs.
From a single transition to a coordinated duct package, it starts with a conversation about your plans, dimensions, and schedule.
Meet the story behind Pro Duct
Chick-fil-A · A Pro Duct kitchen projectOur commercial kitchen work includes this Chick-fil-A project. Bring your next kitchen ventilation project to Pro Duct. Our scope includes commercial hoods, exhaust fan installation, stainless fabrication, and welded grease duct.



Excellent work
and attention.
Honest, reliable,
and good quality.
A direct conversation with the people who fabricate your parts.
Formed in the shop.Send a drawing, measured sketch, or photos. Include dimensions, quantities, and your project location.
Send your project detailsReview materials, connections, clearances, and timing with our shop before the fabrication scope is agreed.
Prepare a better drawingReceive made-to-order parts for your job. Confirm pickup, delivery, and installation arrangements for your project.
See our finished workBring us your mechanical drawings, a measured sketch, or the details of an existing connection. We’ll work through the dimensions, materials, and fabrication scope with you.
From the plan
From our Kennewick shop to your next project. The right metal and construction, reviewed around the way you build.
Galvanized steel, galvanneal, stainless steel, aluminum, carbon steel, and PVC-coated material. Confirm availability and suitability for your order.
Explore material optionsUnlined, lined, and double-wall construction in round and rectangular forms. Share insulation requirements and clear inside dimensions.
Compare duct constructionDimensions, quantities, material, connections, and job location. A measured sketch is a useful place to begin.
Prepare your project requestBased in Kennewick and serving projects within a 120-mile radius. From Pasco and Richland to the surrounding region, bring us into the conversation early.
Clear specifications make for a better fabrication conversation.
Read the planning guidesYes. Pro Duct fabricates rectangular and round duct, transitions, taps, filter boxes, and other made-to-order sheet metal. Share drawings, dimensions, material requirements, and quantities for review.
Yes. Our scope includes commercial kitchen hoods, exhaust fans, and welded grease duct. Hood selection, engineering, fire suppression, and installation responsibilities are coordinated for each project.
Include the product, dimensions, quantity, material or gauge if specified, job location, and requested timing. Drawings, sketches, equipment schedules, and photos are helpful.