hat
Ekran ak woulèt konstan tansyon sezon prentan ak doub pouli ray anba kenbe ekran an nan tansyon konstan pou li ka sispann nenpòt kote epi kòd la pa pral ale atravè glas la lè se ekran an nye.
eng
Screens with constant tension spring rollers and double pulley bottom rails keep the screen in constant tension so it can be stopped anywhere and the cord will not go across the glass when the screen is retracted.