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Window System

87 Inward-Opening System

A thermally broken aluminum window system with inward-opening glass sash, exterior-mounted screen and flexible tilt-and-turn ventilation.
Product Overview

Designed for residential projects requiring dependable thermal performance, controlled ventilation and a clean architectural appearance.

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Product Features

Engineered as a Complete

Window System

Independent Glass and Exterior Screen Sashes

‍The glazed sash opens inward while the exterior-mounted insect-screen sash opens outward, providing effective ventilation while keeping the interior opening clear and accessible.

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Flexible Tilt-and-Turn Ventilation

‍Open the glazed sash fully for maximum airflow, or tilt it inward for secure, controlled ventilation without fully opening the window.

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High-Performance Thermal Construction

‍An 87 mm thermally broken frame, 35.3 mm PA66 GF25 thermal barrier and insulated glazing options work together to support thermal comfort and reduce heat transfer throughout the year.

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Flush Architectural Detailing

‍Flush interior and exterior frame-and-sash surfaces, refined glazing beads and slim visible profiles create a clean architectural appearance while preserving daylight and exterior views.

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Durable Sealing and Drainage

‍Multi-point hardware, EPDM compression seals and concealed drainage support smooth operation, security and dependable resistance to air and water over time.

Comfort
Thermally broken aluminum framing, insulated glazing and multi-layer sealing help support stable indoor temperatures and reduced exterior noise throughout the year.
Ventilation
Full inward opening and tilt ventilation provide flexible airflow, while the exterior-mounted screen allows ventilation without occupying interior space.
Integration
Flush frame-and-sash detailing, concealed drainage and refined visible profiles support clean coordination with interior finishes and exterior elevations.
PRODUCT DATA

Technical Specifications

System & Construction

System Type

Single inward-opening aluminum window

System Depth

87 mm

Aluminum Profile

6063-T5 aluminum alloy

Main Wall Thickness

1.8 mm

Thermal Break

35.3 mm PA66 GF25 reinforced polyamide

Standard Glazing

5 mm + 27A + 5 mm insulated glazing

Optional Glazing

Large-format double glazing or selected triple glazing

Triple-Glazing Options

5 mm + 15A + 5 mm + 18A + 5 mm or 6 mm + 15A + 6 mm + 15A + 6 mm

Sealing Structure

EPDM compression-gasket sealing

Frame and Sash Design

Flush interior and exterior frame-and-sash appearance

Glazing Bead

Square or slim square glazing-bead options

Drainage

Concealed drainage system

Operation & Components

Opening Types

Inward opening and tilt-and-turn

Screen System

Exterior-mounted outward-opening insect-screen sash

Hardware

HOPPE handles with Siegenia, Roto or selected heavy-duty concealed-hinge configurations

Recommended Sash Size

500–850 mm wide × 750–1500 mm high

Optional Security Hardware

Multi-point locking and smart fingerprint-handle options

Optional System Features

Glass guard, concealed screen, ventilation module, open corner and thermal-insulation inserts

Performance & Certification

Performance Classification

CW-PG40 certified configuration available

Certified Test Size

800 × 1500 mm, Type C

Design Pressure

±1920 Pa

Water Penetration Resistance

290 Pa

Certified Thermal Performance

U-Factor 1.69 W/m²·K for the listed certified triple-glazed configuration

Certified Standards

AAMA/WDMA/CSA 101/I.S.2/A440-17, A440S1:19 and CSA A440.2:19

Specifications are general product-system information. Glazing, hardware, screen type, dimensions, thermal performance and certified configuration vary by project and are confirmed through technical review and approved shop drawings.

PRODUCT DETAILS

Explore the System in Detail

1
Opening & Operation
Explore how the system opens, closes and supports everyday ventilation, access and use.
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Opening configurations
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Fixed and operable combinations
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Ventilation modes
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Panel and sash operation
2
Frame, Glazing & Performance
Review the frame construction, glazing options and performance-related details that shape comfort, durability and visual proportion.
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Frame and section details
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Insulated glazing configurations
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Thermal and acoustic design
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Sealing and drainage
3
Hardware, Screens & Finishes
Explore the hardware, screen systems and finish options used to complete the window system.
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Handles, hinges and locking
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Screen configurations
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Interior and exterior finishes
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Optional accessories