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Residential Awning & Casement Windows
For high-performance double-glazing, explore AGP’s product range available now Explore

A flat-face frame gives a clean and contemporary architectural look. The 35mm platform ensures robust performance and suitability in a wide range of wind exposures. Awning and casement windows have bead-glazed or pocket-glazed options with possible maximum IGU thickness of 24mm.

Specialist product options are available including passive ventilation features, French casement formats, replacement frames and chair frames.

Key Features
  • For mainstream residential use
  • Squared off frame and no grooves or die lines on sashes and frames for a clean, contemporary appearance
  • A strong frame with a 35mm platform for high performance
  • Bead-glazed or pocket-glazed options with possible maximum IGU thickness of 24mm
  • Condensation collected in a channel
  • Three passive ventilation options with windows closed — Sashvent, Aerovent and Ventient.
  • Two–point espagnolette locking available
  • Three frame options — standard frame, replacement frame and chair frame
Scope of Use
  • Awning windows provide versatile ventilation with a good degree of weather protection
  • Casements can direct breezes inside and have a traditional aesthetic
  • Need to be used in defined maximum sizes according to the wind exposure
  • Can be used for sun shading, windbreak, privacy and as an architectural feature
Limitations on Use
  • Care needed if projecting on to walkways and decks. Restrictor stays can limit opening in such situations
  • Restrictors will be needed to conform to NZBC F4 'Safety from falling' if windows open on to a drop of 1m or more 
  • Consider a horizontal sliding window to protect walkways
  • Caution is required for the use of casements which open directly into prevailing winds
  • Casements beyond benches may have top fasteners that are hard to reach 
Statement of Building Code Compliance
  • Designed, tested and manufactured to meet NZS 4211: Performance of Windows, and NZS 4233:  Glazing in Buildings, Parts 1-4
  • Designed and tested to conform to NZ Building Code, including Clause E2.
In-Service History
  • Extensively used in residential projects throughout New Zealand for more than 40 years with continuous design upgrades
  • Widely used by homeowners, builders, Group home builders and specifiers.
Other Performance Attributes
  • Window and door warranty provided under normal conditions of use against failure of materials and workmanship for a period of five years
  • Surface finish is covered by a separate performance warranty dependent on the actual finish selected
  • A hardware/componentry warranty is offered against defects in manufacturing, functionality and surface finish for a period of five years, provided care and maintenance guidelines have been followed.
E2 External Moisture compliant
External Moisture
Data Sheet
Span Tables
Declare Label


Altherm Care, Maintenance & Warranty Brochure (with AGP)


Altherm on Masterspec
Full Specification
Specification Clause
Specifier Guide
WGANZ Guide to E2/AS1
Altherm Design Brochure


AGP Cleaning & Maintenance
AGP Condensation Guide
AGP Visual Quality of Glass
APL and Sustainability


Manufacturer Contact List
CAD/PDF Details
Full Set of Drawings


Altherm Residential Awning Window Beaded Sash and Espagnolette Sash


Altherm Residential Awning Window Double Glazing, Vented and Aerovent Sash


Altherm Residential Awning Window, Ventient


Altherm Residential Awning Window Replacement Frame and Chair Frame


Altherm Residential Awning Window 90º & 135º Corner Posts and Liner Adaptor


Altherm Residential Casement Window and French Casement Window, D/G Sash & Fixed Light


Installation Details
Altherm Residential Awning Window on Board & Batten


Altherm Residential Awning Window on Brick Veneer


Altherm Residential Awning Window on Bevelback Weatherboard


Altherm Residential Awning Window on Flat Sheet


Altherm Residential Awning Window on No Cladding


Altherm Residential Awning Window on Profile Metal


Altherm Residential Awning Window on Rusticated Weatherboard


Altherm Residential Awning Window on Stucco


APL Internal Liner Infills and Adaptors

Revit LT 2020

APL Residential Awning Window with Mullion and Transom

Revit LT 2020

Awning Window 90° and 135° Corner
Awning Window Single Panel
Awning Window Two Panel
Awning Window Two Panel with Aerovent
Awning Window Two Panel with Ventient
Awning Window with Underlight
Casement Window Two Panel
Residential Series Awning Window Aerovent

Revit LT 2020

Residential Series Awning Window Espagnolette Sash

Revit LT 2020

Residential Series Awning Window Single Panel

Revit LT 2020

Residential Series Awning Window Two Panel

Revit LT 2020

Residential Series Awning Window Vented Sash

Revit LT 2020

Residential Series Awning Window Ventient

Revit LT 2020

Stylish contemporary lines, effective thermal technology and unwavering attention to detail have made Altherm a favourite with architects, designers and homeowners across New Zealand.

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