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grilles when installed in the floor to ensure strength and rigidity
Model Version HRV1 Q + TP400 TP400A HRV1
Maximum monitoring range
3 pipe clips Size 1 B6361
Height 115mm 990320845
Ubbink Insulated Duct Sleeve Diameter 82mm 10m Roll - 25mm Insulation Thickness XP44022/099 grilles when installed in theIndoor 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
