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Space Envelopes Required for Actuators and
Accessories
Externally mounted actuators always require space outside of
the damper sideplate or sleeve. The “S” dimension illustrates the
clearance required for various available actuators.
On dampers less than 18 in. (457mm) high, actuators may also
require clearances above and/or below the sideplate or sleeve.
“B” and “T” dimensions are worst case clearance requirements
for some dampers less than 18 in. (457mm) high. All damper sizes
under 18 in. (457mm) high do not require these worst case clear-
ances. If space availability above or below the damper sleeve is
limited, each damper size should be individually evaluated.
Application Data
5
3
/8"
5"
Right hand drive is shown
Left hand drive available upon request
LH RH
A
Sleeve Length
Varies
6"
3
3
/
4
"
1
1
/2" max.
B*
S
T*
A
5 in.
12 in.**
6 in.
5
3
/8 in.
5 in.A
Sleeve Length
Varies
3
3
/4 in.
1
1
/2 in. max.
Sideplate
5
3
/8"
5"
Right hand drive is shown
Left hand drive available upon request
LH RH
A
Sleeve Length
Varies
6"
3
3
/
4
"
1
1
/2" max.
B*
S
T*
Sleeve
Damper Sideplate and Sleeve Dimensional Data
The drawings below illustrate the factory standard sideplate and sleeve mountings for the SMD-301M. The standard "A" di-
mensions listed in the table provide adequate space for the mounting of actuators and controls.
If space constraints are a problem the "A" dimension can be varied between 5
3
/8 in. (136mm) and 12 in. (305mm).
* For dampers 18 in.(457mm) or more in height these dimensions are 0 in.
Actuator Type/Model
B* T*
S
With OCI, RRL,
or TOR
With OCI, RRL,
or TOR
24 Volt AC
MS7520A2015/B
MS7520A2213/B
6 in. (152mm) 3/8 in. (10mm) 6 in. (152mm)
*With the exception of dampers 11 in. (279mm) high or less (12 in.
(305mm)high or less if width is greater than 64 in. (1625mm)) with OCI
option.
** On dampers 11 in. (279mm) high or less (12 in. (305mm)high or less if
width is greater than 64 in. (1625mm)) with OCI option, sideplate is 16 in.
(406mm)
in. (mm)
"A" Dimension
Sleeve
Sideplate
Standard Maximum
All Dampers* 7 3/16 (183) 12 (305) 6 3/16 (157)
When height is
11 in. (279) or
less with OCI
11 3/16
(284)
12
(305)
10 3/16
(259)