ITM4 Genesis

1-Inch HVAC Plenum Access Doors

1 Inch HVAC Plenum Access Doors

DoorIcon_GPA2_175x200The 1″ HVAC Plenum Access Doors within our Genesis family of products are the perfect fit for economic commercial HVAC air handling units that require 1″ thick non-thermal break panel construction. This HVAC air handler Access door is only available in an outswing model ideal for negative pressure applications. The outswing model can be used on higher positive pressure applications with additional latches added to the door.

  • Extensively ETL tested and meets UL 1995 safety standard compliance for heating and cooling equipment and NFPA 90
  • Stainless steel piano hinge
  • 20-gauge galvanized steel panels standard
  • Polyurethane foam insulation
  • One-piece Santoprene gasket, a UL recognized component

Certifications & Compliance



1-Inch HVAC Plenum Access Doors

technology_nonthermal2The non-thermal break 1″ Genesis Access Door delivers superior sealing with smooth edge surfaces and enhanced strength. The pan-in-pan through-metal panel design of this non-thermal 1″ door offers more value while using the same high-performance components as our industry standard APEX family of products.

Modular Framing Systems

The GPA1 door is recommended for 27 mm commercial HVAC modular framing systems.


1 Inch HVAC Plenum Access Doors

technology_thermalThe 1″ Genesis Access Door is not available with non-through-metal thermal break technology.



Wall Panel

Looking for
HVAC Wall Panels?

Genesis 1″ Plenum
Wall Panels

Complete your custom commercial HVAC air handling unit with 1-inch plenum wall and roof panels.


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

Polyurethane Foam
Genesis Access Doors include industry-approved polyurethane foam insulation for a superior seal, thermal characteristics and door rigidity to meet stringent Indoor Air Quality applications.
Custom Sizing
Custom Sizing
Our Genesis doors and plenum walls can be custom built to meet your specifications. We can create a custom sizing solution for any project.
Viewport Ready

ITM4 Viewports offer increased visibility and accessibility to any Genesis door. Our thermal break and non-thermal break viewports are easy to install or replace in the field. 

Latch Technology
ITM4 uses Ventlok and Allegis Latches to give you a custom fit while maintaining the tightest seal in the industry. Our engineering team will help you select the most appropriate latch for your project. 
Phone number

(763) 497-0842


Mon-Fri: 8am - 5pm CST