墙面卡锁型变形缝（IL2）

内外墙区别：外墙配止水带，内墙、顶棚不配

——卡锁型内外墙变形缝(伸缩缝)有如下特点：

外观整洁，连接平顺，坚固稳定，卡锁式固定，安装维修方便

--Lock interior and exterior distortion seam (type adjustable seam) device has the following characteristics :

Neat in appearance and connection smoothness , firmly fixed , card lock type , easy installation and maintenance .