ISO 9001 : 2008

CERTIFIED

MSFD-GBD-20C2-A-R

Type : Motorized Fire Smoke Damper
Fire Rating : 20 Series-1½ hour.
Leakage Rating : Class – II
Blade Type : Double Skin; A : Parallel Operation
Construction : Galvanized Steel (GI)

 

MSFD B-20/30 Series is a high performance UL 555 / 555S Classified combination of fire and smoke damper with 1½hr. / 3hr. fire rating , installed vertically or horizontally (with blades running horizontally) and is rated for airflow and leakage Class-II leakage in either direction.

UL-555S Test Ratings

Fire Rating : 1½ hrs

Leakage Rating : Class – II

Max Velocity : 2000 fpm

Temperature : 250 °F (121 °C)

Max Operating Pressure: 4 in. w.g (1000 pa)

Standard Construction

Frame

16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.

Blades

Parallel operated Aerofoil type blade made of 20 gauge (0.9 mm) thick galvanized steel.

Blade Seals

Silicon rubber blade seals.

Jamb Seals

Stainless steel.

Jack Shaft

½” x ½” (12 mm) Galvanized steel square shaft.

Thermal Response Device (TRD)

165°F.

Actuator

Honeywell (24V AC, 120V AC, 230V AC).

Sleeve

Minimum 0.9 mm, single section is field or factory installed.
Multiple section is factory installed.
Sleeve thickness as per NFPA table 3-4.6.3.

Limit Switches

For BMS open / close indication.

Optional Fittings

Retaining Angles

1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm).

Indicator

Externally mounted open, close visible Indicator.

Push Button

For manual reset of damper.

Transitions (R)

Neck adapter for round duct connections.

Junction Box

Model : MSFD-GBD-20C2-A/R UL 555/555S Dampermeets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.

Actuator location standard: Left side from rear view
(Jack shaft view)

 

Note :
FC : Fail Close in the event of Fire
FO : Fail Open in the event of Fire

 

WHILE ORDERING INDICATE THE DAMPER IS FC/FO (FAIL CLOSE / FAIL OPEN)

 

Optional Construction (UL Certification N/A)

Frame : Stainless Steel 16 gauge (304/316L)

Blade : Stainless Steel 16 gauge (304/316L)

Downloads

Request for Quotation

  • MSFD-GB-31C3-A-R

    Galvanized construction, 3-hour, Class 3 leakage at 350° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
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  • MSFD-GB-31C2-A-R

    Galvanized construction, 3-hour, Class 2 leakage at 250° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
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  • MSFD-GB-31C1-A-R

    Galvanized construction, 3-hour, Class 1 leakage at 250° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
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