What CTI Does: Custom Millwork and Door Components | Composite Technology International
- CTI
- Apr 28
- 3 min read
When professionals in the building industry mention CTI, they’re referring to Composite Technology International—a trusted manufacturer of precision-engineered custom millwork and door components. Whether you know us by our full name or our shorthand, we deliver high-quality millwork products that combine innovation, durability, and sustainability. With decades of industry experience, our commitment to excellence and customer satisfaction sets us apart.
This post breaks down what we offer, how our systems are built to perform, and why CTI is the go-to partner for custom millwork and door components.
Who Is CTI?
Composite Technology International (CTI) has spent decades designing and delivering materials that help door shops, prodealers, and distributors work smarter. We specialize in fully customizable, pre-machined components engineered to fit your workflow—whether you're managing high-volume distribution or operating a local door shop.
From sourcing flexibility to consistent quality control, CTI is built around solving the challenges you face on the shop floor and beyond.
CTI Product Categories
Our products are organized into two primary categories: Millwork and Door Components, all engineered with customization, performance, and reliability in mind.
For over 20 years, Composite Technology International (CTI) has led the way in manufacturing and distributing premium millwork products. From trim and molding to various substrates and small parts, our solutions are built for both durability and design. Engineered to elevate any project, our millwork delivers lasting performance with precise craftsmanship and style.
Boards – Trim and finishing boards are available in a range of dimensions and materials.
Profiles – Standard and custom shapes to support a variety of architectural styles.
Smalls – Specialty parts like stops, dowels, and fillers to complete any millwork package.
CTI’s door component solutions are built to simplify assembly, reduce labor, and ensure long-lasting performance in the field. Our components are engineered with precision and flexibility in mind, supporting a wide range of configurations and installation needs.
Apex Door System™ – A fully integrated system featuring modular parts like sills, frames, and weatherproofing—all pre-machined to your specs.
Frames – Built for performance and durability, available cut-to-length and machined for immediate assembly.
Sills & Astragals – Weather-ready, resilient, and designed for in-swing, out-swing, or ADA applications.
Weatherproofing – Includes seal pads, sill gaskets, door sweeps, sill pans, and weatherstripping options in a variety of sizes and colors.
Jambs – Custom-fit and pre-machined to ensure a tight, accurate fit in your assemblies.
Manufacturing Components – Dowels, panel seats, fillers, and other behind-the-scenes elements that streamline your production process.
Why Wholesalers and Retailers Choose CTI
CTI products are made to reduce your labor burden, minimize waste, and ensure a better end result for your customers. Our focus is on helping you build smarter, from the first cut to the final fit.
Pre-machined components cut down time and increase precision
Unparalleled customer support ensures our customers receive exceptional service at every stage, from initial consultation to post-sales support
Domestic and international production accommodates shifting inventory and demand
Single-source ordering improves supply chain control and consistency
Tight quality control ensures every shipment performs as expected
CTI or Composite Technology International—It’s All Us
Whether you’re searching for CTI’s door systems, millwork, or custom pre-hung door components, you're in the right place. CTI is built around performance, partnership, and providing solutions that fit your exact needs.
Composite Technology International’s products are trusted by professionals across North America who rely on our precision and consistency to deliver results every time.
Build Smarter with Custom Millwork and Door Components from CTI
Ready to streamline your operation? Explore our custom millwork and door components, request a quote, or connect with our team to learn how CTI can support your next build.
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