Every comfortable indoor space depends on well-designed air distribution, and that’s precisely where American Louver shines. They’ve spent decades mastering the creation of high-quality grilles, registers, and diffusers, providing the essential link between powerful HVAC systems and the aesthetically pleasing environments we all expect.

A Rich History Rooted in American Manufacturing

Founded in 1954 in Skokie, Illinois, American Louver Company was established as a dedicated manufacturer of high-quality louvers and diffusers. From its humble beginnings, the company quickly earned a reputation for its commitment to American craftsmanship and innovative solutions in air distribution. For decades, it thrived as a family-owned business, steadily expanding its product lines and market reach. Through the years, American Louver has moved its base of operations to Des Plaines, Illinois and has expanded and evolved into the larger company Plasticade, while still keeping their superior HVAC products as the American Louver brand.

All New, All American, All Aluminum

For architectural designs that have exposed ductwork, the brand new Aluminum Spiral Duct Grille is an absolute game changer. This all-aluminum air outlet is specifically engineered to seamlessly integrate with spiral duct systems, offering both superior functionality and a sleek, contemporary look.

What makes it Stand Out?

  • Designed for exposed ductwork: Unlike traditional grilles that require complex transitions, these grilles mount directly onto round spiral ducts. This not only simplifies installation, but also creates a clean, integrated aesthetic that complements the industrial-chic appeal of exposed systems.
  • All-aluminum construction: Crafted entirely from aluminum, these grilles are built for durability and longevity. They are lightweight, resistant to corrosion, and often come with a mill finish that provides a sophisticated, unadorned appearance.
  • Precision airflow control: The spiral duct grille features an adjustable air scoop. This crucial element allows for precise control over the direction and throw of the airflow. The 3/4″ spaced blades work with the adjusted scoop to ensure smooth, controlled, and efficient air distribution throughout the space.
  • Quiet and efficient performance: The design incorporates foam gasketing. This creates a tight seal against the duct, minimizing air leaks and preventing rattling, which contributes to a quieter and more efficient HVAC system.
  • Versatility in sizing: The spiral duct grilles are available in a wide range of sizes to fit different duct dimensions, ensuring a suitable option for any project.
  • Attention to detail: From tight manufacturing tolerances that ensure a precise fit to the inclusion of countersunk screw holes for a flush installation, every detail is considered to provide a high-quality product.

Offering both precise air distribution and a modern aesthetic, American Louver’s aluminum spiral duct grille is thoughtfully engineered for exposed duct systems. It provides architects, engineers, and contractors with a reliable, attractive, and high-performing option for these applications.


With decades of experience and a forward-thinking approach, American Louver continues to be a trusted name in air distribution. Their ongoing commitment to product innovation, rigorous manufacturing standards, and unwavering customer service ensures they remain at the forefront of providing solutions that enhance indoor air quality and thermal comfort in a wide array of environments.