Work Item
ASTM WK78607

Revision of C1199-14 Standard Test Method for Measuring the Steady-State Thermal Transmittance of Fenestration Systems Using Hot Box Methods


None Provided


Revision to ASTM C1199 is required to appropriate calculation of a standardized U-factor for window/door products that has LowE coated glazing layers that face the interior ambient air.


Developed by Subcommittee: C16.30

Committee: C16

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 10-17-2021

Technical Contact: Dennis Anderson

Item: 012

Ballot: C16 (22-01)

Status: Ballot Item Approved