Umnyango womlilo wensimbi ezesekeli zokugqoka ezilula ezifana ne-pulley yi-hardware engenisiwe, ikhwalithi enhle kakhulu, ihlala isikhathi eside. Inani lokusetshenziswa liqashwe ngokucophelela, okwenza isikhathi sokusetshenziswa somkhiqizo sibe ngokoqobo futhi sivikela amalungelo nezintshisekelo zabathengi.

umlilo ukalwe Ingaphandle steel umnyango,umlilo ukalwe iminyango eshelelayo ezenzakalelayo, umnyango olinganiselwe umlilo,umlilo ukalwe iminyango eshelelayo,ukulinganisa umlilo iminyango yensimbi engagqwali,umlilo ukalwe umnyango acoustic,iminyango ye-anti fire, hlola iminyango yangaphakathi,umlilo ukalwe Ingaphandle steel umnyango,ukuphuma komlilo kanye neminyango yokuphuma esimweni esiphuthumayo,umlilo ukalwe iminyango eshelelayo,iminyango yehhotela elinganiselwe ngomlilo,umlilo ukalwe umnyango acoustic,umnyango owehlayo ongavumeli umlilo,umlilo ukalwe Ingaphandle steel umnyango,umlilo ukalwe iminyango eshelelayo,intengo yezicabha ezishelelayo zikalwe ngomlilo,umlilo ukalwe umnyango acoustic