Aluminium glass doors form Vertech 1890 Series are thermally broken doors with 1/8" aluminum panel covering on each sides that offer unmatched performance. All Vertech aluminum extruded components shall be of 6063-T5 alloy, and glass stops to be snap-on type. Corners will be mortised and welded, and a steel rod inserted in bottom rail and bolted at both ends will complete the assembly. Aluminium glass doors shall be guarantied against defective materials for a period of one year after acceptance of work.