NAFS Overview

The North American Fenestration Standard

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.

Equivalency Bulletins

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 and should be used as tools in conjunction with the NAFS standards available for purchase in the FGIA Online Store. The equivalency bulletins are available for download here.

NAFS-22 Recognized Operator Types

Changes from the 2008, 2011, 2017 and 2022 versions of the standard* include key aspects of the performance standards.

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

NAFS-22 Recognized Operator Types

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

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