Slim Aluminum Casement Windows
Slim sightlines, strong compression sealing and flexible inward or outward opening configurations for modern residential and architectural projects.
CASEMENT WINDOW SYSTEMS
Clean Ventilation. Reliable Compression Sealing.
Casement windows are side-hinged and close against continuous seals, making them a strong choice where ventilation, weather resistance and a clean framed opening must work together. ALTOP coordinates the opening direction, frame depth, glazing, hardware and performance around the project.
Outswing Casement
The sash opens to the exterior, preserving interior space while providing controlled ventilation and a clean internal appearance.
Inswing Casement
An inward-opening configuration that supports convenient cleaning and is suited to projects where exterior opening is restricted.
French Casement
Two opening sashes can create a wider clear opening with reduced visual interruption when the selected system allows a movable center meeting detail.
Casement + Fixed Combination
Operable casement panels can be integrated with fixed glazing to balance ventilation, daylight, views and façade composition.
Casement + Awning Combination
Side-hinged and top-hinged vents can be coordinated within one architectural language for rooms requiring different ventilation patterns.
DESIGN & PERFORMANCE
Specify the Complete Casement Assembly.
The final system should be selected around visible sightline, opening direction, sash size, glass weight, thermal target, weather exposure and hardware requirements—not appearance alone.
Key Casement Specifications
Outswing or Inswing · Visible Sightline · Maximum Sash Size · Glass Make-up · Thermal Break · U-Value · SHGC · Air Infiltration · Water Penetration · Structural Load · Acoustic Performance · Hardware · Screen Option · Installation Interface
FOR ARCHITECTS & PROJECT TEAMS
Coordinate Opening Direction Before Detailing.
Casement direction affects interior clearance, exterior projections, insect screens, cleaning access, hardware location and interfaces with curtains, railings and adjacent walls. Share elevations, plans and the window schedule so these conditions can be reviewed before quotation.
PROJECT APPLICATIONS
Suitable for Performance-Led Openings.
Luxury Residential · Villas & Custom Homes · Coastal & High-Wind · Apartments · Hospitality
Compression sealing can support strong air and water performance, but the correct profile, glazing, hardware and reinforcement still depend on sash size, exposure, wind pressure and project requirements.
Planning a Casement Window Package?
Send the window schedule, rough opening sizes, preferred opening direction and performance targets. We’ll help identify suitable casement configurations and the technical information required for quotation.