When the steel fire door is opened, only 1KG force is needed, and the opening tension is less than 50N. Even people sitting in wheelchairs can open it easily.

https://ztfiredoor.com/25464.html

ngusapake lawang darurat metu,lawang njaba geni,lawang kanggo geni metu,fire exit double door,lawang darurat metu pindho,fire exit double door,double door fire exit,lawang njaba geni,lawang metu darurat komersial,fire exit double door,emergency exit doors for sale,fire exit double door,emergency exit fire doors,lawang njaba geni,lawang komersial geni metu,fire exit double door