hat
Se roulo an te fè soti nan aliminyòm kalib lou ak sèvi ak yon sezon prentan konstan tansyon asire fim nan se toujou rèd. Yon kòd kontwòl manyèlman opere ekran an endepandamman nan nivo konsole. Kòd sa a pase nan polis gid aliminyòm pou ekran an ka opere soti nan yon kote ki fasil. Yon bouton pouse prentan ki chaje pèmèt ajisteman fasil. Ekran roulo yo disponib tou ak yon kontwòl chèn bò anbreyaj oswa operasyon elektrik.
eng
The roller is made from heavy gauge aluminium and uses a constant tension spring to ensure the film is always taut. A control cord manually operates the screen independently from console level. This cord passes through aluminium guide pulleys so that the screen can be operated from a convenient location. A spring-loaded push button allows easy adjustment. Roller screens are also available with a side chain clutch control or electric operation.