Overview

Steel Core HST is a lift and slide patio door system designed for panoramic glazing, smooth operation, and barrier free transitions. The lift and slide mechanism releases seal compression so large panels move with minimal effort, making HST ideal for wide openings that connect interior space to terraces while maintaining comfort, warmth, and security. 

Key highlights

• Designed for large scale glazing and bright interiors 
• Lift and slide hardware supports smooth movement of large sashes 
• Low threshold is 48 mm, approximately 1.89 in, and supports barrier free construction 
• Modular system with multiple configuration options 
• Popular layouts include two section and four section versions 
• Fixframe option provides a very narrow frame in the fixed section for more glass area 

Technical snapshot

• Frame installation depth: 7.75 in
• Sash profile depth: 3.35 in
• Maximum construction width: 255.9 in
• Maximum construction height: 106.3 in
• Maximum glazing width: 2.0 in
• Uf heat transfer coefficient: up to 0.2 BTU per hour per square foot per F

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