La description

Feature: 1.Aluminum alloy material *****-layer conicals shape, Excellent appearance with molding vane and outside frame into integrity. ***** core can be dismantled, easily install and reassembled. ***** with round sector damper or butterfly damper ***** anodized aluminum finish or powder coated. (any color is available) Construction: ***** width: *4/*5mm ***** size can be adjusted as per customers' requirements HFK-YS1(neck sizes): NS:Ф**0/**0/**0/**0/**0/**0/**0/**0/**0/**0 HFK-YS2(neck sizes): NS:Ф**0/**0/**0/**0/**0/**0/**0/**0 Functions: step down diffuser rings deflect air stream **0 degrees.as the air outlet of central air-condition system terminal with the larger diffusion area. Use: for upward airflow, suitable for ceiling , Suitable in shopping malls, offices, hotels, restaurants and other building as being requested.