Wahlee Glass Cotton Official Website Cotton Felt Cotton Board Cotton Block Shanghai Glass Cotton

Glass wool duct lining

Wahlee glass wool duct lining is a special material suitable for insulation, sound absorption, and noise reduction in duct systems. Suitable for use in environments with high requirements for quietness, such as high-end hotels, offices, clubs, etc., installed in the air ducts entering the room, it can significantly reduce the noise emitted by the air vents and maintain indoor tranquility.

| Introduction

Glass wool is a product made by using a unique patented centrifugal method technology to process molten glass fiber and applying an environmentally friendly formula adhesive based on thermosetting resin. It is an elastic felt made of glass fiber filaments with a diameter of only a few microns. It can effectively confine air, thus playing a role in insulation, sound absorption, and safety protection. It is the best material for insulation, sound absorption, and noise reduction.

| Performance

The selection of product specifications is usually determined by two factors:
1. The requirement for maintaining the thermal resistance value (R value) of the structure is determined by the climate conditions of the building location: R=T/K (T - thickness of glass wool felt, K - thermal conductivity of glass wool felt), so that the required specifications of glass wool felt can be calculated< Br> 2. Requirements for controlling condensation and condensation in the working environment of buildings: In addition to being related to the temperature of the working environment, condensation and condensation are also related to the relative humidity of the indoor air. To control condensation and condensation, it is required to use thermal calculations and responsive glass wool felt to make the surface temperature inside the building higher than the dew point temperature.

| Parameter

Sound absorption effect (ASTMC423-99/GBJ47) duct lining board reverberation chamber method
Unit: Unit weight: kg/m³ Thickness: mm

Different audio (Hz) sound absorption coefficients
Density	Thickness	125	250	500	1000	2000	4000	NRC
48	25	0.34	0.52	0.73	0.96	1.10	1.09	0.85
	40	0.25	0.72	1.05	1.04	1.02	1.08	0.95
	50	0.31	0.81	1.16	1.09	1.06	1.13	1.05
64	25	0.09	0.22	0.63	0.86	0.86	0.96	0.65
	40	0.15	0.57	0.95	0.99	0.99	0.93	0.85
	50	0.28	0.81	1.04	1.10	1.10	1.09	1.00

| Photograph

Glass wool duct lining