AA®250 and AA®425 Thermal Entrance Doors — More Information

close 250425Thermal

AA®250/AA®425 Thermal Entrance Doors

close 250425Thermal

AA®250/AA®425 Thermal Entrance Doors


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.

The AA®250 and AA®425 accommodate 1" insulating glass and insulating laminated glass to improve thermal and sound reduction performance. Laminated glass enhances STC and OITC (sound resistance) performance as well as improves occupant safety. Kawneer’s thermal entrance doors have been tested and proven in accordance with North American performance standards for air, structural, condensation, thermal and sound transmission.


Breaking from tradition, Kawneer’s AA®250 and AA®425 deliver a new aesthetic look with a 2-1/2" narrow stile and a 4-1/4" wide stile, respectively. To meet aesthetic and hardware application requirements, the entrances are also offered with a range of top and bottom rails.

The 2-1/4" (57.2 mm) depth door uses a 14 mm polyamide strut thermal break that accommodates a dual finish as well as various combinations of hinging and locking hardware. These include offset pivots, butt hinges, continuous gear hinges, MS locking, concealed vertical rod exit devices and rim exit devices.

For the Finishing Touch

Architectural Class I anodized aluminum finishes are available in clear and color choices. Painted finishes, including fluoropolymer, that meet AAMA 2605 standards and solvent-free powder coatings that meet AAMA 2604 standards are available in a variety of color choices.