... toughened Low E outer, 16mm spacer argon gas filled, 6mm toughened float inner4mm toughened soft ... Low E outer, 16mm argon gas filled cavity, 6.38mm clear laminatedor bespokeColor1. ... Insulating glass could be combined by float clear glass, tinted glass, solar reflective glass, Low E glass, laminated glass, tempered glass, heat-strengthened glass and curved glass ...