Supply Air diffuser .To reduce the flow resistance and noise..And adapt to central air-conditioning System.

Supply air diffuser(HVAC,Air grille ,Air diffuser,Air register,Double deflection supply air register) FSB-B series is the traditional supply air grille, which blades joint to the frame by spring;FSB-B has no removable heart frame, but blades of them can be adjusted from 0° to 90°, to get different air supply distance. FSB-B series products can work with Opposed Blade Damper to obtain different effects of air flow. Both of them had two models: double-layer (SB-B, SB-C) and single-layer (DB-B, DB-C). Generally, for double-layer products, the short blades are in the face while long blades in the back, for single-layer products, blades are parallel to the short side.

Standard Size(mm) as bellow :

SPEC   (NECK SIZE)

200

250

300

350

400

450

500

600

700

800

900

1000

100

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150

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200

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250

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300

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350

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400

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450

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500

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600

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700

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800

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900

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1000

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