Introduction
The document describes a high-quality residential door system designed for inward opening, featuring a modern construction depth of 88 mm. It emphasizes energy efficiency, stability, and design flexibility.

Specifications
- Construction Depth: 88 mm
- Insulation: Five chamber system with internal and external insulating chambers
- Stability: Large steel reinforcements and welded corner connectors for enhanced stability
- Thermal Performance: Ud value of 0.77 W/(m²K) as per DIN EN 10077-2
- Design: Inter-sash add-on panelling with numerous design variants from partner Rodenberg

Features
- Sealing Levels: Three sealing levels with central thermal and double seals
- Threshold: Barrier-free threshold with thermal break
- Weather Protection: Aluminium weather bar and rebate pad
- Max Sash Sizes: Single sash side hung door up to 1200 x 2400 mm

Innovations
The system includes a patented solution for attaching inter-sash add-on panelling, allowing for a wide range of design options.

Sustainability
The greenline principle ensures sustainability through energy-efficient systems, lead-free stabilisers, and intelligent regrind concepts.

Conclusion
The KÖMMERLING 88plus residential door system offers a combination of high insulation, stability, and design flexibility, making it suitable for various personal living environments.