APL Architectural Series Sliding Doors by ALTHERM Window Systems

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Sliding door sloped sill – single slider

90° corner meeting stiles

Flush sill option – single slider

Multi slider sill

Overwall slider - single track

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Description

Sliding doors slide on an outside track and can meet at 90° corners without the need for a corner post. For most configurations a fixed side panel is required. However, a bypass slider option is available where two or three panels move.

The sliding door system has also been designed for convenient use as a cavity slider or for sliding back over a wall.

For best overall performance, pair with The AGP System® with Solux-E® or Solux Ultra® low-e glass.

Key Features

Recommended maximum 2700mm high doors in Extra High wind zones
A high-performance series of windows and doors ideal for architecturally designed houses and apartments
Designed for suitability for Extra High wind zones and Specific Design applications
The sill frame has both sloped and flush track options
Interlocker stiles and mullions are flush in the closed position
A bypass slider is available where two or three panels can be moved independently without a fixed panel
Corner sliders (90°) are available with no corner post (exterior and interior corners)
Three sliders can stack over a fixed panel
Over-wall and cavity sliding options are available

Ranges

APL Architectural Series

Scope of Use

Suitable for most residential environments in larger sizes
Designed for suitability for Extra High wind zones and Specific Design applications
Need to be used in defined maximum sizes according to the wind exposure
Narrow stiles and large glass expanses maximise views in the closed position

Limitations on Use

For enhanced flush indoor-outdoor levels consider recessing the sill into the floor pad to minimise or eliminate upstand
Recommended maximum 2700mm high doors in Extra High wind zones

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 2004
Design upgrades regularly released
Widely used by homeowners, 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

Case Studies
News

September 2026

Case Studies

Not Your Ordinary Bach

Peak Performance with Altherm Window Systems

January 2026

Case Studies

Architect Tom Kundig on What Drives His Designs

February 2025

Case Studies

February 2016

Product News

Documents

Data Sheet

Span Tables

Declare Label

2025

AGP Care & Maintenance

AGP Condensation Guide

AGP Visual Quality of Glass

Altherm on Masterspec

Calculate R-Value and Ug-Value

Full Specification

docx

Specification Clause

docx

Specifier Guide

WGANZ Guide to E2/AS1

Altherm Care, Maintenance & Warranty Brochure (with AGP)

2020

AGP State of the Art Glass Brochure

Altherm Design Brochure

2020

Sound Solutions Brochure

2020

APL and Sustainability

2019

Manufacturer Contact List