Founded 1986 · Approved aluminium window supplier to the Hong Kong Housing Authority · Founding member and chairman of the Hong Kong Aluminium Windows and Doors Association 繁 / EN

HOUSING AUTHORITY WINDOWS · 38 · 50 SERIES

Housing Authority windows

LE-RELAX is an approved aluminium window supplier to the Hong Kong Housing Authority. Our 38 and 50 Housing Authority windows are made to the Housing Authority specification, tested to British Standards BS 6375-1 and BS 6375-2, and fitted with stainless steel friction stays made in our own factory and certified under PCCS-FH. For bulk orders from contractors, and for window replacement in HOS and private flats.

Approved Hong Kong Housing Authority supplier
BS 6375-1 · BS 6375-2
PCCS-FH certified friction stays
Direct from our Zhongshan factory

WhatsApp us about Housing Authority windows See it in store →

Range

Housing Authority window series

Windows & doors catalogue (PDF) ↓

38 Housing Authority window

Housing Authority specification casement Ask for specs and a quote →

50 Housing Authority window (ZW-50)

Housing Authority specification casement, PCCS-AW certified Ask for specs and a quote →

Housing Authority specification friction stays

304 stainless steel, also sold separately Ask for specs and a quote →

Why LE-RELAX

Why LE-RELAX Housing Authority windows

Housing Authority approved

LE-RELAX is an approved aluminium window supplier to the Hong Kong Housing Authority, and we keep investing in testing to meet its requirements.

Tested to standard

Our Housing Authority windows are tested to BS 6375-1:2009 and BS 6375-2:2009, covering weathertightness, operation and strength.

Our own friction stays

Our friction stays are made in our own factory and certified under PCCS-FH, the Hong Kong window hinge product certification, for a secure fit with the frame.

Bulk supply

Profile extrusion, fabrication, glass and assembly all happen in our Zhongshan factory, so we can handle bulk orders from contractors and window factories.

Comparison

How Housing Authority windows differ from ordinary aluminium windows

LE-RELAX Housing Authority windows

Ordinary aluminium windows

Specification

Designed and made to the Hong Kong Housing Authority specification

Set by each maker

Testing

BS 6375-1:2009 weathertightness and BS 6375-2:2009 operation and strength

Not necessarily tested

Friction stays

Stainless steel stays made in our own factory, PCCS-FH certified

Depends on the supplier

Parts

Standard parts, easy to match for repairs

Depends on the model

In detail: Housing Authority windows vs ordinary aluminium windows →

Who it suits

Who chooses Housing Authority windows

Contractors and window factories

Bulk supply of Housing Authority windows, profiles and friction stays to the Housing Authority specification. Containers arrive in Hong Kong from our Zhongshan factory every day, so delivery is reliable.

HOS and private flat owners

If you want durable replacement windows with easy-to-find parts, choose Housing Authority windows. For larger windows, consider our 40 to 110 series casement windows.

Repairs after window inspection

The Mandatory Window Inspection Scheme requires private buildings aged 10 years or more to have their windows inspected regularly. If stays or sashes need replacing, we can supply the right parts.

Certificates

Product certificates

Our aluminium windows and friction stays are assessed by an independent certification body under the Hong Kong Product Conformity Certification Schemes (PCCS), with regular surveillance audits. The certificate holder, Prestige Metal And Glass Products Limited, and the manufacturer, 鎮威五金玻璃制品（中山）有限公司 (our Zhongshan factory), are both LE-RELAX companies. Tap a certificate to enlarge it. You can check a certificate's authenticity and status at www.takwin.com.hk.

PCCS-AW

Hong Kong aluminium window product conformity certification

Certificate no.: TW-PCCSAW-007
Certificate holder: Prestige Metal And Glass Products Limited (an LE-RELAX company)
Product: 50 Housing Authority window (ZW-50 series)
Certified by: Takwin (Hong Kong) Ltd, HKCAS accredited (registration no. 020)
Valid: 13 June 2025 to 12 June 2028
First certified: 24 May 2019

PCCS-FH

Hong Kong window hinge product conformity certification

Certificate no.: TW-PCCSFH-004
Certificate holder: Prestige Metal And Glass Products Limited (an LE-RELAX company)
Product: LE series friction stays (10", 12", 14", 16")
Certified by: Takwin (Hong Kong) Ltd, HKCAS accredited (registration no. 020)
Valid: 13 June 2025 to 12 June 2028
First certified: 24 May 2019

Specification stated on the certificates

50mm deep profiles, at least 2mm thick, with glazing beads at least 1.1mm
6063-T5 aluminium alloy, anodised to grade AA25 (25 microns)
Friction stays in 2.5mm / 3.0mm grade 304 stainless steel (S30400), with S30430 stainless steel pivots
Side-hung stays at least 60% of the sash width, opening to a maximum of 90° with at least 100mm clearance between frame and sash (70mm for top-hung)

For the full certificates with attached drawings, WhatsApp 6588 1426.

Glass options

With glass processed by LE-RELAX

All glass is processed in our Zhongshan factory. Choose for heat, sound or safety.

Toughened glass Heat-soaked safety glass Laminated glass Insulated glass LOW-E glass Bent toughened glass Fire-rated glass Switchable glass Safety film glass Decorative glass Float glass

Certification

Hong Kong Housing Authority

Approved aluminium window supplier

BS 6375-1:2009 · BS 6375-2:2009

Housing Authority windows

PCCS-AW · TW-PCCSAW-007

Hong Kong aluminium window product conformity certification

PCCS-FH · TW-PCCSFH-004

Window hinges (friction stays)

See all certifications →

FAQs

What are Housing Authority windows?

Housing Authority windows are aluminium windows designed and made to the Hong Kong Housing Authority specification. They are mainly used in public housing estates, and many HOS and private flat owners choose them too.

Is LE-RELAX an approved Housing Authority supplier?

Yes. LE-RELAX is an approved aluminium window supplier to the Hong Kong Housing Authority, and our Housing Authority windows are tested to BS 6375-1:2009 and BS 6375-2:2009.

Can private or HOS flats use Housing Authority windows?

Yes. Housing Authority windows are durable and spare parts are easy to find. For larger windows or better sound and heat insulation, you can also consider our 40 to 110 series casement windows with insulated or LOW-E glass.

How do I choose between 38 and 50 Housing Authority windows?

It depends on the window size, floor level and position. WhatsApp the store photos of the site with rough measurements, and we will suggest the right series.

Can contractors order in bulk?

Yes. We supply Housing Authority windows, profiles and friction stays to contractors and window factories. WhatsApp 6588 1426 for a quote.

Buyer's guide