NW Acoustical 645 Performance

Unprecedented Sound Control for Interiors

Minimal Surface Mounted Flush Sill | Flush Sill – NW Acoustical 645

Type of Test Inward Opening Units Outward Opening Units

Air Infiltration 1

ASTM E-283, ft3/min./ft. and NFRC 400

@ 1.57 psf (75 Pa): 0.12
(0.12 exfiltration)

A2


@ 6.24 psf (300 Pa): 0.30

@ 1.57 psf (75 Pa): 0.12
(0.12 exfiltration)

A2


@ 6.24 psf (300 Pa): 0.28

Forced Entry Resistance 1

AAMA-1304

In accordance with AAMA -1304 requirements 1

(European PAS24 Certified with optional security package)

Operating Force 1

ASTM E2068

The NW Acoustical 645 meets:

  • Swing Panel: Open 1 lbf (2.8 N) & Close 1 lbf (3.9 N)
  • Folding Panels: Initiate Motion - Open 4 lbf (20 N) & Close 3 lbf (15 N)
  • Folding Panels: Maintain Motion - Open 1 lbf (3 N) & Close 1 lbf (4 N)

Operation / Cycling Performance

AAMA 920 & DIN EN 1191

Windows and Pedestrian Doors - Mechanical Durability

The NW Acoustical 645 meets:

  • "AAMA 920" requirement for swing panel attached to side jamb: 500,000 cycles - Pass 1
  • German “DIN EN 1191/12400 Classification,” where a unit is tested after 20,000 opening and closing cycles and is still functional

1 Derived from excerpts of results of 13’1” W x 8’6” H (4000 mm x 2600 mm) 4 panel unit (1L3R configuration) with low profile saddle sill specific or equivalent to lab tested by Intertek Building & Construction, an independent testing laboratory in March 2020 per AAMA/WDMA/CSA 101/I.S.2/A440-17, NAFS-17 - North American Fenestration Standard