The 451 Series is a wide pocket version of the 450 Series framing system for accommodating up to 29mm I.G. units


It allows a choice of either a "front" or "back" pocket glazing system, depending on the desired effect.

Designed around pressure equalisation principles*, this system is ideal for use in exposed conditions where a high degree of waterproofing is required.



Pressure Equalisation

Generally the air pressure inside any closed structure is lower than the outside pressure. Consequently this differential creates "suction" forces which causes any water (that penetrates the glazing gasket) to be sucked to the interior of the building. This situation is eliminated through a series of slots or vents to the exterior of the frame that minimises the pressure differential allowing any water to drain to the outside under the normal forces of gravity.

Some dimensions detailed above may be nominal.
Due to continual product development, G.James reserves the right to change, delete or add any information, section profiles, construction details and specifications relating to this product without notice

Specify This

To correctly specify this product, copy and paste this text block into your project documentation.

All windows shall be G.James 451 Series compliant with AS2047, glazed in accordance with AS1288 and installed to the manufacturers recommendations and details. All surface finishing shall be in accordance with AS1231 (Anodising) and/or AS3715 (Powder Coating).