◆材质：镀锌板

◆规格尺寸：W*H配合风管或风口尺寸

◆特性：

1.颈部有凸形加强筋，与伸缩软管连接时起定位的作用。

2.圆颈部分的直径不可大于方形尺寸。

◆Material: galvanized sheet

◆Specification size: W*H with air duct or tuyere size

◆Features:

1. The neck has convex ribs, which play a role in positioning when connected with the telescopic hose.

2. The diameter of the round neck portion cannot be larger than the square size.