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Metro Series Double Hung Windows
ALTHERM Window Systems
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11a New Double Hung Window Interlocker
11b
11c New Double Hung Window Lock
11d New Double Hung Window Head
Description

Double hung windows are a counter-balanced vertical sliding window system where both panels move together. They are a good option for non-projecting ventilation.

Key Features
  • Suitable for residential, commercial and institutional use
  • In the fully open position with both sashes adjoining each other half the window area is open
  • Recommended aspect ratio is 2:1 with a weight restriction of 100kg per panel
  • Tested to Extra High wind zone
  • Generally appropriate in single banks because of the large width of coupling bars
  • Work well with insect screens
  • Opening handle in bottom rail of lower sash has two locking at the sill
Categories
Sliding Windows
Ranges
Metro Series
Scope of Use
  • Suitable for residential, commercial and institutional use
  • Suitable for wind zones up to Extra High
  • Work well with insect screens
Limitations on Use
  • Opening gap at sill may need to be restricted in high window situations
  • Double hung windows will generally be appropriate in single banks because of the large width of coupling bars
  • Recommended aspect ratio is 2:1 with a weight restriction of 100kg per panel
  • Consider the ease of reaching to the window handle if the sliding panel is placed beyond a bench
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 2019
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
  • News
Documents
Data Sheet

2020

pdf
Span Tables
pdf
Declare Label

2022

pdf
Specification Clause/Guide

2019

pdf
Altherm on Masterspec
URL
Specifier Guide

2019

pdf
WGANZ Guide to E2/AS1
pdf
Altherm Care, Maintenance & Warranty Brochure (with AGP)

2020

URL
Altherm Design Brochure

2020

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

2019

URL
Manufacturer Contact List
URL
CAD/PDF Details
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Altherm Metro Series Double Hung Window
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Altherm Metro Series Double Hung Window - Aerovent Option
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BIM
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Metro Series Double Hung Window

Revit LT 2020

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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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