Page 215 - FanPedia - By Twin City Fan and Blower

FAN-PEDIA INLET BOXES

Published by
Twin City Fan & Blower
©2017 TCF.COM

INTEGRAL INLET BOX

Also Known As: Attached Inlet Box

Inlet boxes are used when the installation does
not allow for a straight run of duct into the fan.
The inlet box is designed to minimize the system
effect of a 90 degree turn into the fan. Attached
inlet boxes are integrated into the inlet side of the
fan housing. The Inlet box is supported by the fan.

DETACHED INLET BOX
(BOLT ON) Inlet Box Positions Determined

FROM DRIVE SIDE
Inlet boxes are used when the installation does
not allow for a straight run of duct into the fan.
The inlet box is designed to minimize the system
effect of a 90 degree turn into the fan. The Bolt
On design is bolted directly to the inlet flange 360
of the fan. 315 45

360°
315° 45°
270 270° 90° 90
DETACHED INLET BOX 225° 135°

(FREE STANDING) 180°
225 135
This is the same concept as the detached inlet 180
box except it can be mounted separate from the
fan and is fully supported at the floor.

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