EZ-R Phenolic Lined Duct

Sheet Metal Connectors now offers EZ-R phenolic lined metal ductwork, which is easier to install and simpler to handle than traditional 3" double-wall insulated sheet metal and comes pre-insulated, fully assembled, and ready to install.

Article content provided by Sheet Metal Connectors.

Ready to install in your indoor and outdoor applications, EZ-R Duct has high thermal resistance values and closed-cell insulation. EZ-R duct is available in R-8, R-12, R-16, and R-20 to meet your specification. EZ-R duct and fittings combine two proven and familiar products to create a superior high R-value lined duct option.

Made from standard galvanized sheet metal with TDC connections and constructed to SMACNA 2020 Duct Construction Standards, EZ-R Duct is then lined with Kingspan Koolduct liner and mechanically fastened and sealed. EZ-R can also be constructed with any of the other material options SMC has to offer including: paint grip, stainless steel, aluminum, polyvinyl coated, and G-90.

Phenolic Duct Insulation That’s Convenient, Efficient, and Affordable, EZ-R Duct weighs significantly less than double-wall insulated sheet metal and achieves a higher R-Value in less space. R-12 phenolic panels are only 1.75" thick compared to 3" for R-12 fiberglass liner. With its high R values, virtually no air leakage, lightweight convenience, and shorter installation time, EZ-R is a good choice for a range of indoor and outdoor air distribution applications, especially budget-minded rooftop ductwork.

EZ-R Duct is suitable for new and retrofit commercial, light industrial and institutional projects, and reduces air-leakage rates to a fraction of standard rectangular sheet metal ductwork. It is significant in three key areas: cutting costs, slashing energy use and trimming operational carbon dioxide emissions.

SMC has applied its 50+ years of fabrication experience to the phenolic duct market. With our new processes and equipment, we can  fabricate high-quality EZ-R phenolic lined duct and custom fittings at an extremely reasonable cost compared to other systems. 

Send us your takeoff today or enter it into PriceDuct for an instant quote.

Sheet Metal Connectors, Inc. – Product Catalogs for Commercial HVAC Systems

Have any questions about Sheet Metal Connectors? Contact them here.

Sheet Metal Connectors, Inc. is a fabricator of standard and custom commercial and industrial sheet metal products. Some of our offerings include rectangular ductwork and fittings, spiral pipe and fittings, custom welding, double wall duct, pressed round fittings, and oval pipe.


Apr 30, 2024 Products & Services Update

Latest Articles


Strengthen Your Workplace by Reviewing the OSHA Top 10

Mar 18, 2026 - The Occupational Safety and Health Administration’s (OSHA) Top 10 Most Frequently Cited Standards serve to keep employers aware of common risks across all industries.


Meet Procore Helix: AI that Builds with you

Mar 18, 2026 - We’ve unified your construction data into an AI-powered intelligence layer that answers questions, automates tasks, and delivers actionable insights in real time.


Data-Driven Contracting Meets Data-Driven Manufacturing

Mar 18, 2026 - Mestek Machinery and Stratus have partnered to digitally connect the Lockformer Spiral Tubeformer with real-time data, boosting efficiency, reducing labor, and streamlining HVAC fabrication.