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The sponsors of AAMA/WDMA/CSA 101/I.S.2/A440 North American Fenestration Standard/Specification for windows, doors and skylights (NAFS), have conducted a side-by-side comparison of the testing and specification differences between the 2008, 2011, 2017 and 2022 editions of the standard. Equivalency bulletins aiming to show the user how all the editions correlate to one-another, were made available following the 2011, 2017 and 2022 editions of NAFS. These should be used as tools in conjunction with the NAFS standards available for purchase in the FGIA Online Store.

Fenestration standards are always evolving due to changes in technology, building codes and rating system performance requirements. The performance-based, material-neutral NAFS governing windows, doors and skylights is no exception. This material-neutral omnibus guidepost for fenestration specifiers, has been evolving ever since 1997 and serves as the basis for product certification as required by IBC and IRC.

Changes from the 2008, 2011, 2017 and  2022 versions of the standard (referenced in the International Building Codes and available as the basis for AAMA’s nationally-recognized, ANSI-accredited third-party testing and Gold Label Certification Program (the 2022 version of NAFS is expected to be referenced in the 2024 International Building Codes and the 2025 National Building Code of Canada)) include key aspects of the performance standards.

The following table lists the NAFS-22 recognized operator type designation codes, along with their full description.

NAFS-22 Recognized Operator Types

AP = Awning, hopper, projected window
RWP = Roof window — plastic glazed
ATD = Architectural terrace door
SD = Sliding door
BW = Basement window
SHD = Side-hinged door
C = Casement window
SHW = Side-hinged (inswinging) window
DASHD = Dual-action side-hinged door
SKG = Unit skylight — glass glazed
DAW = Dual-action window SHD = Side-hinged door
SKP = Unit skylight — plastic glazed
FD = Fixed door
SLT = Side lite
FLD = Folding door
SP = Specialty product
FW = Fixed window
SSP = Secondary storm product
GH = Greenhouse window
TA = Tropical awning window
H = Hung window
TASSP = Tropical awning window secondary storm product
HE = Hinged rescue window
TDDCC = Tubular daylighting device — closed ceiling
HP = Horizontally pivoted window
TDDOC = Tubular daylighting device — open ceiling
HS = Horizontal sliding window
TH = Top-hinged window
J = Jalousie window
TTR = Top turn reversible
JA = Jal-awning window
TR = Transom
MA = Mullion assembly
VP = Vertically pivoted window
POW = Parallel opening window
VS = Vertical sliding window
RWG = Roof window — glass glazed

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