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A register is simply a grille which incorporates an integral damper for air volume control section, air slot and pattern controller Troffers are availableslot air grille ขนาด,Base models in the 6600 series vary by slot width and include: 6650 Linear Air

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slot air grille ขนาด,Linear slot diffusers are used to project air from a ceiling or a wall The diffuser typically consists of a series of narrow slots or openings through which