Ubbink Insulated Duct Sleeve Diameter 225mm x 10m Roll - 25mm Insulation Thickness 990 323 501 The Greenwood Ceiling spacer is

The Greenwood Ceiling spacer is used when the void in the ceiling is to narrow

air probe: 11 g

Once calibrated

iCON 15 is ideal for toilets

Ubbink Insulated Duct Sleeve Diameter 225mm x 10m Roll - 25mm Insulation Thickness 990 323 501 The Greenwood Ceiling spacer isIndoor sound is potentially a greater source of noise hindrance than outdoor sound as the insulation in buildings has improved. Mechanical ventilation units and fans generate sound as they displace the air through the air distribution system and cause vibration. Special attention must be paid to the location and mounting of the ventilation unit, the sound attenuation of partition walls, ceilings and doors, and the design and installation of the air