Corner for a duct

摘要

Doun-25/06/2015 A corner with two arms connected at a right angle, each arm having stacking projections with a corresponding window under each projection and an inner edge that defines an inner 5 boundary line arranged to align with a wall of a duct, wherein the windows are positioned in spaced relation to the inner boundary line so as not to cross the inner boundary line. '4 7' 4, 7' -'4 If FI& (3 Vt '-4 '.M3 F t C,2:2;