450222 FC OIPM
 ø 8.5 (2x)
Installation Manual
FC Series
Fast Clamps
Warning
Sheet metal will have sharp edges. Always 
protect your hands during installation. 
The tabs are sized for the weight of the fan.
The duct should be supported by other 
means. Always consult local code when 
installing our products. If special supports 
are required in anticipation of earth quakes, 
the FC clamps are not intended to meet 
these requirements.
General Information
The FC Clamps are intended to simplify fan 
installation and isolate fan vibration from 
rigid metal duct. FC Clamps are convenient 
in installations where regular removal of the 
fan is necessary for inspection and cleaning.
FC Clamps are available in sizes 4” through 
20” to fit corresponding duct sizes.
FC Clamps in sizes 4” through 12” are 
equipped with integral hanging tabs. When 
used with model FR or FG fans, these tabs
can be used to suspend the fans. If used for 
that purpose, two FC clamps are required.
DO NOT hang FKD Series fans from these 
tabs. FKD fans are equipped with integral 
brackets for suspended installation.
Installation instructions
1. To minimize vibration, leave a gap of 
1
/
4
” 
between fan collar and duct.
2. Tighten the two screws until the fan and 
duct are snugly attached.
3. If using FC Clamps to support a fan (FR 
and FG only), drive two pc. sheet metal 
screws through the FC Clamp and into 
the collar of the fan. 
 DO NOT over tighten, the screws are to 
ensure that the clamp does not slip off 
the fan.
4. If the fan is to be suspended from the 
integral hanging tabs (FG and FR fans only); 
Follow steps 1 & 2 in the illustration:
Hanging tabs ø 8.5 (2x)
(FC 4 to 12)
Hanging tabs
(FC 4 to 12)
 ø 8.5 (2x)
1. Fold out the tabs as 
shown using needle-
nose pliers.
2. Hang the fan using 
suitable hardware.
Item #: 450222
Rev Date: 2016-05-18
United States
10048 Industrial Blvd., Lenexa, KS, 66215
Tel.: 800.747.1762 • Fax: 800.487.9915
Canada
50 Kanalflakt Way, Bouctouche, NB, E4S 3M5
Tel.: 800.565.3548 • Fax: 877.747.8116




