Serviceability features flame observation door for easy burner flame viewing. Dual cleanouts is placed for easy access. The interlocking, insulated, furniture-grade steel cabinet helps retain heat within the furnace and prevents annoying vibrations during operation.

Source: ACHR News (a part of news report)

http://www.hiross.org 海洛斯精密空调ㄍ海洛斯机房空调