Window restrictors limit how far a window opens, providing essential child safety and fall prevention for high-rise homes in Singapore. Compatible with casement, sliding, and top-hung windows, they meet BCA safety recommendations for families with young children. Endo Grilles supplies and installs window restrictors for all window types.
Window restrictors are lockable safety devices that cap how far a window can open, keeping children safe while still letting air in. We fit two types of window restrictors in Singapore, matched to your window profile: Konceal™ Lock for swing casement windows, and Ezi Lock V2 for windows Konceal™ Lock can’t fit.
Two Window Restrictors, One Safety Standard
Not every window in a Singapore home is the same type, so one restrictor design doesn’t fit all of them. That’s why we carry two window restrictor options rather than forcing a single product onto every window:
- Konceal™ Lock — for swing casement windows, the most common type in HDB and condo bedrooms
- Ezi Lock V2 — for windows where Konceal™ Lock isn’t compatible
Both are assessed on-site during measurement, so you’re never guessing which one your windows need.
Konceal™ Lock : The Invisible Alternative to Window Grilles
Konceal™ Lock keeps your view 100% clear while maintaining maximum child safety — no visible grille across the window. It’s machined from 304-grade stainless steel, rust-proof and corrosion-resistant, with universal key access so one key opens every unit in your home. It’s been tested by Setsco, a test and inspection body accredited by SAC-SINGLAS to ISO/IEC 17025, and withstands up to 175kg of force. The safety gap is fixed at 10cm to BCA standard.
Compared to a typical DIY window lock — plastic or zinc-alloy, stuck on with mounting tape — Konceal™ Lock is professionally fitted for a concealed finish that won’t snap or come loose.
Feature | Konceal™ Lock | DIY Window Locks |
|---|---|---|
Material | 304 Grade Stainless Steel | Plastic / Zinc Alloy |
Durability | Rust-proof & Anti-corrosion | Prone to snapping/rust |
Safety Gap | Fixed 10cm (BCA Standard) | Adjustable (Unreliable) |
Installation | Professional Concealed Fit | DIY with Mounting Tape |
Key Access | Universal Key ( Ease of Use ) | No Options for Keys |
Ezi Lock V2: For Windows Konceal™ Lock Can’t Fit
Where a window’s profile doesn’t suit Konceal™ Lock, Ezi Lock V2 covers the gap so every window type in your home can still get a compliant window restrictor. Our team confirms which of the two window restrictors is right for each window during the site visit — you don’t need to work it out yourself.
Are Window Restrictors Legal for HDB Flats?
Yes. Window restrictors are HDB-compliant as long as they maintain a safety gap of no more than 10cm and still allow the window to open fully for emergency exit. Both Konceal™ Lock and Ezi Lock V2 meet this requirement.
Pricing
- Konceal™ Lock — $25 per piece supply-only, $78 per piece supplied and installed
- Ezi Lock V2 — $25 per piece supply-only, $78 per piece supplied and installed
- Bundle pricing available for 5 or more pieces (most 3-room HDB flats need 4-6)
Related Guides
Frequently Asked Questions
If you have swing casement windows, Konceal™ Lock is the standard choice. For sliding, awning, or other window types, Ezi Lock V2 is used instead. We confirm this on-site.
Konceal™ Lock is tested by Setsco (SAC-SINGLAS accredited to ISO/IEC 17025) to withstand up to 175kg of force, and both restrictor types maintain the BCA-standard 10cm gap.
Both are built for professional installation, not DIY. A self-installed or taped-on restrictor risks an unreliable fit, which defeats the safety purpose.
For independent test standards, see Setsco’s ISO/IEC 17025 accreditation via SAC-SINGLAS.
Ready to childproof your windows? WhatsApp us at +65 8071 1177 for a on-site assessment to find the right window restrictor for each window.
Explore Our Window Safety Solutions
Need more than window restrictors? Explore our invisible grilles for full window protection, or cat-proof grilles for pet safety. See our complete window grilles guide to compare all options. Renovating? Check our HDB renovation window package. Get a free quote or contact us.
What is a window restrictor?
A window restrictor is a safety device that limits how far a window can open, typically to 100mm or less. This prevents young children from climbing or falling through windows in high-rise homes, making them an essential child safety measure for Singapore flats and condos.
Are window restrictors compulsory in Singapore?
Window restrictors are not compulsory for all homes, but BCA safety guidelines strongly recommend them for residences with young children, especially in high-rise buildings. Many parents in HDB flats and condos install them as a precautionary safety measure.
What types of windows can window restrictors be installed on?
Window restrictors can be installed on casement, sliding, top-hung, and louvre windows. Different restrictor models are designed for different window types, so it is important to choose the correct one for your windows.
Can I still open my window fully with a restrictor installed?
Most window restrictors have a release mechanism that allows adults to override the restriction and open the window fully when needed, for example for cleaning. The override typically requires a key or a deliberate two-step action that young children cannot perform.