System 4-20Hi+ Casement Window

A highly efficient, thermally enhanced aluminium framed open out polyamide casement window system.

Features and benefits:

• The polyamide thermal break profiles have been designed to minimize heat transfer across the window profiles. Thermal performance is further improved through thermal gaskets and foam profiles. These reduce radiation heat loss across the air cavities within the window profiles to provide additional thermal enhancement.
• All systems installed are tested in line with PAS 24 security standards and certified by a UKAS accredited certification body.
• Extruded aluminium alloy (6060 T6, T5 or T4 to BS EN 12020-2; BS 755-9:2001).
• Frame members are mitre cut at 45°, corners are reinforced with extruded aluminium crimping cleats and corner braces, and a secure joint is formed by pneumatically crimping into the extruded crimping cleat. Mullion and transom bars are square cut shaped and fixed securely to the frame by means of stainless steel screws and fixing cleats. All frame joints are sealed during construction against entry of water using Metal Technology’s two-part adhesive. Metal Technology recommend that only A2 or A4 Austenitic (300 series/class 70) stainless steel fixing screws are used in the assembly of their products.
• All windows incorporate a sill liner profile to accommodate made to measure bespoke push fit aluminium sill pressing.
• Windows can accommodate a range of insulating glass units, and are dry glazed using ‘snap-in’ extruded aluminium beads with colour coded, co-extruded, PVC nitrile, captive ‘E’ gaskets externally and ‘wedge’ gaskets internally.
• All windows have a continuous EPDM seal fitted to their perimeter.
• Air infiltration (to BS EN 1026): Class 4.
• Watertightness (to BS EN 1027): Class E900.
• Wind resistance (to BS EN 12211): E2400.