Architectural & Engineering Specifications
March 2004
Bathroom
Exhaust Fans
MODELS: 671R & 672R
DESCRIPTION
• Designed for large baths, utility rooms or laundry rooms.
• Model 671R: For baths up to 85 sq. ft.; other rooms
up to 110 sq. ft.
Model 672R: For baths up to 105 sq. ft.; other rooms
up to 135 sq. ft.
• Attractive Polymeric Grille fastens easily with
torsion springs.
• Motor quietly drives electronically balanced polypropylene
blower wheel.
• Prewired outlet box; plug-in receptacle.
• Quiet plastic backdraft damper operates automatically.
• Refer to NuTone's catalog for a complete line of accessories to
effectively adapt this Exhaust Fan
to your construction requirements.
DESIGN FEATURES
Air Delivery: Model 671R: 90 CFM at 0.10" S.P.
Model 672R: 110 CFM at 0.10" S.P.
Sound Level: Model 671R: 3.0 Sones.
Model 672R: 4.0 Sones.
Dimensions: Housing: 9" x 9" x 5
3
⁄4" deep.
Grille: 10
1
⁄2" x 10
1
⁄4" x
9
⁄16".
Material & Finish: Housing: Cold rolled steel, galvanized.
Grille: White polymeric.
Motor: Fully encased, plug-in, thermally
protected, 115vAC, 60 Hz.
Model 671R: 0.8 Amp.
Model 672R: 1.2 Amp.
Blower Wheel: Polypropylene.
Duct Size: 4" diameter.
INSTALLATION
• Unit is designed for ceiling installation and attaches to joists or
header between joists with slotted mounting bracket.
• Connects to 4" round duct.
• Grille installs with torsion springs and adjusts to ceiling
thickness.
• Switch must be purchased separately. Refer to NuTone's
catalog.
• Installation Instructions included with each unit.
ARCHITECT'S SPECIFICATIONS
Exhaust Fan(s) shall be Model Number 671R or
Model Number 672R as manufactured by NuTone
according to listed specifications.
Model 671R shall ventilate 90 CFM (45 L/s) at 0.10" S.P. at a
sound level or 2.5 Sones.
Model 672R shall ventilate 110 CFM (52 L/s) at 0.10" S.P. at
a sound level of 4.0 Sones.
The housing of either unit shall measure 9" x 9" x 5
3
⁄
4" deep
and connect to 4" round duct.
TYPICAL INSTALLATION
4" DIAMETER DUCT
ROOF CAP
90° ELBOW
WALL CAP
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