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AA®250/425 Thermal Entrances

  • 2-1/2" (63.5mm) or 4-1/4" (108mm) sightline
  • 2-1/4" (57.2mm) depth
  • High thermal performance
  • Blast mitigation, hurricane resistance
  • Moderate traffic applications

Product Features

To achieve new heights of thermal performance, Kawneer pulled out all the stops in engineering the AA®250 and AA®425 doors. In addition to thermal breaks, Kawneer has added its proven corner construction, which has four Sigma deep penetration and fillet welds, plus mechanical fastening at each corner.

The immediate door frame jambs and transom bar/door header tout a dual perimeter weather seal featuring Kawneer’s Sealair bulb weathering. Also featured is a triple-finned, soft pile weather stripping that minimizes airflow around the perimeter edge of the door. At the bottom of the door, the combination of a thermally broken threshold and dual bottom door sweeps minimizes air infiltration. All of this adds up to a superior thermal roadblock that provides improved comfort and savings in heating and cooling costs.

» Learn more about AA®250/425 Thermal Entrances

Key Features include

  • AA®250 narrow stile has 2-1/2" vertical stiles, 2-1/2" top rail, and 3-7/8" bottom rail
  • AA®425 wide stile has 4-1/4" vertical stiles, 4-1/4" top rail, and 6-1/2" bottom rail
  • Door is 2-1/4" deep
  • Door has 1/8" typical wall thickness
  • Dual welded corner construction
  • Single acting
  • Offset pivots, butt hinges or continuous geared hinge
  • Surface mounted or concealed closers
  • MS locks or exit device hardware
  • Architects Classic push/pulls
  • 1" insulated glass infill
  • Meeting stile astragal has dual pile weathering with polymeric fin
  • Sealair bulb polymeric weatherstripping and pile weathering with polymeric fin in door frame
  • Permanodic®anodized finishes in seven choices
  • Painted finishes in standard and custom choices


Optional Features

  • Numerous push/pull finishes
  • Variety of top, bottom, and cross rails
  • Two color finish capability

Product Applications

  • AA®250 - engineered for thermal efficiency in moderate traffic applications such as offices, stores, and apartment buildings
  • AA®425 - engineered for thermal efficiency and added strength for schools, institutions and other increased traffic applications

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