ITM4 Technology

Innovative technologies to advance the HVAC door and air handler industry.

ITM4 Innovation Never Stops

Our standing commitment to innovation has results in break-though product and technology applications. By partnering with you to deliver custom solutions, we develop new technologies to increase performance and adapt with changing HVAC industry standards. We look forward to building something new for your specific application.


Innovative technologies to advance the HVAC door and air handler industry


Thermal Break Design

technology_thermalThe interior side of the door panel and mounting frames are separated from the exterior side with a polyurethane material. This creates a non-through metal assembly known as a thermal break door or wall panel. A thermal break design reduces the transfer of temperature through the door framework reducing condensation and the loss of energy and results in energy savings. 


Custom Build

technology_CustomSizeOur HVAC access doors, viewports, and plenum walls can be custom built to meet your specifications. We can create a custom sized solution for most HVAC applications. 


Polyurethane Foam

technology_foamThe HVAC access doors and plenum walls include industry approved polyurethane foam insulation for a superior seal, thermal characteristics and door rigidity to meet todays and tomorrows stringent Indoor Air Quality applications.


ITM4 Viewports

Viewport_nowire_175x200-131x150Our HVAC Viewports offer increased safety and accessibility to any HVAC access door. Designed to fit existing ITM4 products or custom products, our thermal break and non-thermal break viewports are easy to install or replace in the field.

Viewports Installed in Genesis Access Doors
  • 8×8 single pane (1/4″ laminated clear glass)
  • 8×8 thermal pane (1/4″ laminated clear & 1/4″ clear tempered glass)
  • 8×12 single pane (1/4″ laminated clear glass)
  • 8×12 thermal pane (1/4″ laminated clear & 1/4″ clear tempered glass)
  • 12×12 single pane (1/4″ laminated clear glass)
  • 12×12 thermal pane (1/4″ laminated clear & 1/4″ clear tempered glass)


technology_latchVentlok and Allegis Latches to give you the custom fit you need while maintaining the tightest seal in the industry. Our engineering team will help you select the most appropriate latch for your project. Visit our Latch partner pages to learn more about each latch.


Ventlok Latches

  • #260 – Ventlok – mill finish – need to add washers
  • #310 – Ventlok mill finish
  • #350 – Ventlok black finish
  • #260 chrome-plated finish (replacing #260 mill finish)
  • #310 chrome-plated finish (replacing #310 mill finish)

Learn More About Ventlok Access Door Hardware (pdf)

Allegis Latches

  • Standard Allegis – black finish (optional for all models)
  • Tool access latch: (all models)
  • Key locking latch: (keyed alike)
  • 3-point latching kit – need to add rod and link brackets
  • Red internal handle – optional (Allegis)
  • Latch Substitutions
  • Standard Allegis (replacing #260 mill finish)
  • Standard Allegis (replacing #310 mill finish)

Learn more, visit Allegis


Gaskets UL-component recognized

technology_gasketITM4 gaskets have “excellent memory.” This means even if the gasket is compressed for long periods of time, it will still resume its original shape when the door is open. Gasket memory is important for a good seal between the door and the door frame. ITM4 gaskets are both UV and chemical resistant.