LOWER THRESHOLD AT REDUCED HEIGHT FOR BUILDING CLOSURES

摘要

The present invention relates to a lower rail (4D-1) for accordion louvers, the rail comprising at least one cavity (50) extending along a longitudinal axis, the cavity being delimited by at least four walls (60 -0, 61-1, 61-2, 62-1, 62-2), including a bottom wall (60) intended to be placed on the ground, an upper wall (62-1, 62-2) comprising a opening (50 ') for access to the cavity (50) and two vertical side walls (61-1, 61-2), the rail being characterized in that it has a total height of less than 20 mm.