Abstract: A glazing unit (1) comprises two sheets of glass (2,3) which are separated by a spacer bar (5). An outer secondary seal (10) extends around the periphery of the glazing unit. The seal (10) has a number of peripherally spaced-apart fixing inserts (50) extending around the periphery of the glazing unit for fixing the glazing unit support (17). Each fixing insert (50) has a base wall section (51), parallel side walls (52) and end wall sections (53) which define an arcuate slot (55) closed at both ends. The configuration of the fixing inserts (50) allows simple fitting while ensuring the maximum bulk of material for structural strength. Opposed fixing inserts (50) are engaged, on assembly, by a toggle (60).

Abstract: A lazing unit (1) comprises two sheets of glass (2,3) which are separated by a spacer bar (5). An outer secondary seal (10) extends around the periphery of the glazing unit. The seal (10) has a number of peripherally spaced-apart fixing inserts (50) extending around the periphery of the glazing unit for fixing the glazing unit support (17). Each fixing insert (50) has a base wall section (51), parallel side walls (52) and end wall sections (53) which define an arcuate slot (55) closed at both ends. The configuration of the fixing inserts (50) allows simple fitting while ensuring the maximum bulk of material for structural strength. Opposed fixing inserts (50) are engaged, on assembly, by a toggle (60).