Inward open soundproof casement windows

The K5N: A True Soundproof Casement Window

Tired of outside noise disrupting your peace? Discover the solution with the K5N inward casement window, a truly soundproof window designed for modern living.

This video demonstrates the exceptional acoustic performance of our inward open casement window. You'll see a live test where this soundproof casement window dramatically reduces noise levels, achieving an incredible 47-decibel difference between the outside and your quiet interior.

Witness for yourself how it effectively blocks out everything from busy street traffic to other environmental sounds. Upgrade your home to the K5N soundproof inward casement window and transform your space into the sanctuary of quiet you deserve.

Color Customization

DERCHI K5N-Inward Open Soundproof Casement Windows support clear color specification for project delivery. The program includes stock colors for faster sourcing and custom options for design control on inward casement window systems.

Available Color Options:

Stock Colors: Pearl White, Deep Sea Blue, Black Skin, Caramel Coffee, Deep Coffee, Quartz Gray, Black Crystal Stone, and Starry Sky Black for immediate availability

Custom Finishes: Color matching service, wood grain patterns, metallic tones, and two-tone combinations for inward open casement window designs

Coating Types: Powder coating, anodizing, and fluorocarbon finishes for durability and weather resistance in soundproof window applications

For accurate results, specify a color code or physical sample, confirm gloss level, and approve a final sample under site lighting before production. For exterior exposure, select the coating type based on UV, humidity, and coastal conditions.

Glass Customization

DERCHI K5N-Inward Open Soundproof Casement Windows offer various glass configurations to meet performance standards. These soundproof casement windows are designed to enhance acoustic, thermal, and security features for both residential and commercial use.

Available Glass Options:

Performance Glass: Laminated, triple glazing, and Low-E options for superior sound reduction and energy efficiency in inward casement windows

Specialty Glass: Reflective, tinted, and bullet-proof varieties for privacy, solar control, and security applications

Advanced Features: Smart glass technology, frosted patterns, and tempered safety glass for specific functional needs

Configuration Options: Various thickness combinations, spacer bar types, and gas fills for customized soundproof window performance

These glass options provide architects with the flexibility to select the best inward open casement window solution based on acoustic requirements, climate conditions, and security needs.

Window Configuration Customization

DERCHI K5N-Inward Open Soundproof Casement Windows offer various configuration options to suit different architectural designs. These windows provide flexibility for both residential and commercial projects, ensuring functionality and aesthetic appeal.

Available Configuration Options:

Window Combinations: Hexagonal bay, large combination, double casement, and four-panel folding systems with various fixed and operable sections

Opening Mechanisms: Inward casement operation combined with sliding, folding, and bi-directional movement for flexible ventilation

Special Designs: Arched tops, picture windows with side casements, transom windows, and symmetrical configurations for unique buildings

Decorative Features: Diamond grilles, muntin bars, and custom divided light patterns for enhanced aesthetic appeal

These configuration options allow architects to select the ideal inward open casement window design based on building aesthetics, space requirements, and functional needs.

K5N Product Details

DERCHI K5N is an inward open casement window with tilt-and-turn operation. It supports secure ventilation and indoor cleaning for homes and light commercial projects.

This soundproof casement window uses triple tempered glass with gas-filled cavities and aluminum spacers to cut noise by up to 37 dB. Multi-point sealing helps prevent sound leaks around the sash and frame.

The 6063-T5 aluminum frame uses 2.0 mm wall thickness and sealed corners for water control. It reaches 5 kPa wind pressure resistance, 700 Pa water tightness, and 1.2 m³/(m²·h) air tightness. Thermal transmittance is 1.0 W/(m²·K). CE / NFRC / CSA and IGCC glass certification support compliance needs.

What’s Included in the K5N Design

K5N combines triple tempered glass, sealed frame joints, rated hardware, and continuous perimeter sealing. Published ratings should be confirmed with test reports. Final performance depends on installation quality, wall structure, and site conditions.

Technical Specifications

Comprehensive parameters and specifications for the DERCHI K5N-Inward Open Soundproof Casement Window, featuring premium materials and advanced engineering for superior acoustic performance.

Professional Performance Standards

Five measured ratings cover heat control, wind load, rain resistance, air leakage, and noise reduction for stable indoor comfort and building protection.

Application Scenarios

Built for projects where noise, airflow, and day-to-day usability affect comfort, focus, and customer experience.

Triple Glass Technology

Three tempered glass panes with argon-filled cavities reduce heat transfer and energy costs. This design enhances safety through impact resistance while improving sound insulation. The triple-glass system creates quieter interiors, making it ideal for buildings near roads or railways. Low-E coating options further improve thermal performance

Advanced Structural Design

Our 2.0mm aluminum profiles provide structural strength to support heavy triple-glass panels. The 64mm insulation strip creates a wide thermal break that minimizes heat bridge and reduces condensation risk. This combination ensures long-term stability while helping achieve passive house energy standards. The robust design prevents deformation and maintains reliable hardware mounting.

Manufacturing Excellence

Our 70,000+ m² facility produces 400,000+ m² of windows annually. With 600+ skilled employees and modern equipment, we maintain consistent quality across all production batches. The 4,000 m² showroom displays our full product range. This scale enables us to meet large project demands while ensuring precision manufacturing.

Quality Assurance & Certifications

DERCHI holds NFRC, CE, AS2047, CSA, and ISO9001 certifications. Every inward casement window undergoes 100% inspection before shipment. Multi-point testing verifies soundproofing performance and structural integrity. Documentation accompanies each product to ensure traceability and quality control.

Innovation & Patent Portfolio

Our 20+ member R&D team focuses on soundproof window optimization. We hold 100+ patents including invention, appearance, and design patents. This investment in innovation drives continuous product improvement. Our team develops custom solutions for specific project requirements.

Industry Experience & Recognition

With 15+ years specializing in aluminum windows and doors, DERCHI has completed 200,000+ successful installations. We have received 50+ industry honors for quality, innovation, and environmental sustainability. Our experience ensures deep understanding of market requirements and technical challenges. This expertise translates into reliable soundproof casement window solutions.

Global Distribution Network

DERCHI operates through 700+ distributors across 100+ countries. Our established logistics channels ensure efficient international delivery. Local support in major markets provides technical assistance and service. This global reach demonstrates our capability to handle projects worldwide.

Quality Material Partnerships

We collaborate with leading hardware brands and trusted raw material suppliers. Regular supplier audits maintain consistent component standards. These partnerships ensure every inward open casement window uses quality materials. High-grade components contribute to product durability and performance.

Comprehensive Service & Warranty

Our 10-year warranty covers profiles, glass seals, and hardware systems. One-stop service includes technical consultation, installation guidance, and after-sales support. We provide complete assistance from order placement to final delivery. This comprehensive approach ensures customer satisfaction throughout the project lifecycle.

Certifications & Standards

International certifications verify our inward casement window quality. NFRC, CE, AS2047, CSA standards ensure global compliance and performance reliability.

Hardware Options

The K5N inward open casement window incorporates specialized hardware components that ensure smooth operation and enhanced soundproofing performance. These carefully selected hardware options work together to deliver reliable functionality for your soundproof casement window system.