Internally Open and Internally Inverted Window

The Internally Open and Internally Inverted Window is a dual-mode, high-performance window system that offers superior flexibility for modern architecture. By simply rotating the handle (90° or 180°), users can switch between inward tilt (ventilation mode) and full inward opening (cleaning mode). Backed by Guohua’s advanced manufacturing, our solution integrates LEASKY’s patented energy-saving technology.

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Product Description

When you choose to purchase the Guohua Internally Open and Internally Inverted Window, you are investing in a ventilation solution that works intelligently with your living environment. Rotate the handle to 90° for the inverted tilt mode – ideal for overnight ventilation with anti-theft security – or to 180° for full inward opening, making glass cleaning effortless and safe.

1. Key Advantages Over Outward-Opening Windows

We at Guohua have engineered the Internally Open and Internally Inverted Window to solve traditional pain points:

Feature	Internally Open & Inverted Window	Outward-Opening Window
Rain-safe ventilation	✅ Inward tilt allows airflow without rain ingress	❌ Rain can enter when open
Cleaning ease	✅ Safe inward cleaning from inside	❌ Risky outward leaning
Anti-theft	✅ 30° tilt angle – secure for overnight use	❌ Larger gap when open
Sash fall risk	✅ No falling hazard	⚠️ High risk for high floors
Space required outside	✅ None	❌ Requires exterior clearance

Why Our Customers Choose This Window

Ventilation without worry – In inverted mode, you can leave the window unattended for hours, perfect for home ventilation.
Dead-angle-free cleaning – No more unsafe leaning outward or hard-to-reach tracks like sliding windows.
Night-time security – The limited 30° opening deters intruders, ideal for low-rise buildings.
High-rise safety – Zero sash fall risk, approved by our LEASKY safety certifications.

2. Technical Specifications (Table)

Below are the standard parameters for the Internally Open and Internally Inverted Window by Guohua:

Parameter	Specification
Frame Depth	70mm / 80mm (customizable)
Profile Material	High-strength aluminum alloy, T5/T6 temper
Glass Option	5mm+20A+5mm double tempered, 3C certified
Hardware	LEASKY multi-point locking system, German-grade
Opening Modes	Inward tilt (15°-30°) & Inward open (90°)
Air Permeability (m³/(m·h))	≤ 0.5 (Grade 8)
Water Tightness (Pa)	≥ 450 (Grade 5)
Wind Load Resistance (kPa)	≥ 3.0 (Grade 7)
Thermal Transmittance (W/m²·K)	≤ 1.8 (with optional Low-E glass)
Handle Rotation	90° (tilt) / 180° (open)

3. Why Choose Guohua & LEASKY Technology?

Fujian Guohua Construction Co., Ltd. is headquartered in the Kangmei Sports Goods Base, Nan’an City, Quanzhou – the Golden Triangle of Southern Fujian, the ancient Silk Road, and the capital of East Asia. We operate three major production bases across Quanzhou (Fujian), Lanzhou (Gansu), and Shanghai, covering a total area of 100,000 m² (with 26,000 m² at our Quanzhou headquarters). We have introduced multiple domestic advanced production lines, employ 500+ staff, including 100+ management and technical personnel.

LEASKY Technology – Our R&D arm – has always taken "Research and development of energy-saving, environmentally friendly, and intelligent green building materials" as its mission. We have cooperated with many universities and successively obtained 20+ national invention and utility model patents. Our certifications include:

ISO9001, ISO14001, ISO45001
National 3C certification
National three-star green building materials certification
AAA-level credit enterprise
Model of scientific and technological innovation value
Outstanding invention of scientific and technological innovation
2024 New Quality Productivity Advanced Brand

4. How the Internal Opening Modes Work

Our unique handle system offers two distinct positions:

Handle Position	Mode	Best For
90° rotation	Inward tilt (inverted)	Night ventilation, light rain days, anti-theft
180° rotation	Full inward open	Easy cleaning, maximum airflow

Pro Tip: Use the inverted mode while away from home – it maintains fresh air circulation without compromising security.

5. FAQs

Q1: Is the Internally Open and Internally Inverted Window safe for high-rise apartments? A: Absolutely. Our Guohua system has zero sash fall risk, unlike outward-opening windows. It passes our strict wind load tests (Grade 7) and is recommended for floors above 10.

Q2: How do I clean the external glass? A: Rotate the handle to 180° to fully open inward. You can safely clean the exterior glass from inside your room – no leaning out required.

Q3: Does the inverted mode really keep rain out? A: Yes. The 15°-30° tilt creates a natural overhang effect. Combined with our EPDM sealing strips, it achieves water tightness Grade 5 (≥450 Pa), tested in Fujian’s typhoon season.

Q4: Can I get a customized size? A: Yes. Relying on LEASKY’s strong industrial foundation and technical advantages, we provide customized door, window, curtain wall, and sunshade system solutions for different regional climates and safety needs.

Q5: What is the lead time? A: Standard sizes: 15-20 days. Custom orders: 25-30 days. Contact us for urgent project requirements.