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Metro Series Awning & Casement Windows
APL 2019 Specifier Guide available Order now

A non-facing sash is used as standard to enhance the range aesthetics, emphasising clean, flat surfaces for a modern appearance. Double glazing to a maximum 24mm thickness can be used.

Mullions and transoms offer a choice of stiffening fins projecting internally or externally depending on window span and aesthetic considerations.

Key Features
  • A versatile, high performance product range based on a unified and contemporary design approach
  • Occupies an intermediate position between Altherm Residential and the APL Architectural Series
  • Awning and casement sashes have a facing option and a flush, non-facing option
  • Facing sashes available in three performance grades
  • Mullions with external fins or internal boxes available
  • Two–point espagnolette locking available
Scope of Use
  • Suitable for most residential environments in larger sizes
  • 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
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
  • Launched in 2006
  • Design upgrades regularly released
  • 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


Data Sheet
Span Tables
Altherm Care & Maintenance Brochure


Producer Statement / Warranty


Full Specification
Specification Clause
Specifier Guide
WGANZ Guide to E2/AS1
APL and Sustainability


Manufacturer Contact List
CAD/PDF Details
Full Set of Drawings


Altherm Metro Series Awning Window and Espagnolette Sash


Altherm Metro Series Awning Window External Fin Mullion / Transom


Altherm Metro Series Awning Window Internal Box Mullion / Transom


Altherm Metro Series Awning Window 90º Corner Window Facet Window


Altherm Metro Series Awning Window Vented Sash and Aerovent


Altherm Metro Series Ventient


Installation Details
Altherm Metro Series Awning Window on Board & Batten


Altherm Metro Series Awning Window on Brick Veneer


Altherm Metro Series Awning Window on Bevelback Weatherboard


Altherm Metro Series Awning Window on Flat Sheet


Altherm Metro Series Awning Window on No Cladding


Altherm Metro Series Awning Window on Profile Metal


Altherm Metro Series Awning Window on Rusticated Weatherboard


Altherm Metro Series Awning Window on Stucco


Altherm Metro Series Awning Sash / Fixed
Altherm Metro Series Awning Window
Altherm Metro Series Casement Sash / Fixed

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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