ENA Blackest™ Fire Retardant Stage Drapes (Acoustic & Blackout)
ENA Blackest™ Fire Retardant Stage Drapes (Acoustic & Blackout)
ENA Blackest™ Acoustic Stage Curtains
Sound & Light Absorbing • FSD FS251 Certificate • BS5867-TYPE B Flame Retardant
📍 Hong Kong Design Institute (HKDI)
Installation Case: Hong Kong Design Institute
Project: Video Studio Renovation Project VTCQ-24/0500/1 (B)
Client: Hong Kong Design Institute (HKDI)
Meeting the strictest material and safety requirements, ENA Blackest™ is the designated solution for critical infrastructure, schools, and government departments.
Project Portfolio
Electrical and Mechanical Services Department (EMSD) HQ
Project: 4/F Conference Room Curtain Project
Year: 2025
Hong Kong Examinations and Assessment Authority
Project: Hung Hom Assessment Centre Renovation Project
Year: 2025
Lingnan University, Hong Kong
Project: Classroom LKK 101 - 102 Acoustic Curtain Project
Year: 2025
Hong Kong Family Welfare Society
Project: Conference Room Curtain Project
Year: 2024
Acoustic Performance
ENA Blackest™ curtains are specifically designed for functional sound and light absorption, achieving a stable 30% sound absorption standard (covering 100-4k Hz frequencies).
- Compliance Standard: Tested according to the US ASTM E423 standard.
- SGS Certification: Passed rigorous testing by the Hong Kong SGS laboratory.
Blackout & Light Absorption
The ENA Blackest design structure provides a 99% physical blackout rate. It effectively blocks UV rays and offers thermal insulation to regulate indoor temperature, achieving 0% formaldehyde (methane) emission.
Blackout Verification Test
Material Specifications
Both the surface and bottom layers are made of high-density velvet. This heavy-duty fabric provides excellent sound absorption while creating a premium interior aesthetic.
| Fabric Weight | 560 g/m² |
|---|---|
| Flame Retardancy (Optional) | Flame retardant treatment is available upon request. Complies with BS 5867 Part II standards. FSD FS251 certificates can be issued for public license applications. |
Sizing Guide
To achieve optimal sound absorption and a visual drape effect, a 1.5x pleat ratio is highly recommended. Curtain height is fully customizable; it is recommended to add 1 cm to touch the floor for maximum acoustic sealing.
| Track Length (m) | Required Fabric Width (m) |
|---|---|
| Within 1.0 m | 1.45 |
| 1.0 - 2.0 m | 2.90 |
| 2.0 - 2.6 m | 4.35 |
| 2.6 - 4.0 m | 6.00 |
- Fabric width is manufactured in fixed multiples of 1.45 m.
- Included Accessories: 4-prong hooks (8 per meter) and tie-back (1 piece).
- Optional Add-ons: Dedicated tracks and accessories are available (quoted separately).
Documents & Terms
Maintenance Guidelines
It is recommended to use a soft brush or vacuum cleaner to remove surface dust. For stains, gently wipe with a damp cloth. The use of cleaning agents containing bleach is strictly prohibited in order to maintain the sound and light absorption performance.
Terms of Purchase
- All custom sizes have a production tolerance of 1~3 mm.
- Prices do not include on-site installation services.
- As custom-made building materials, products are non-refundable and non-exchangeable once purchased.
- If the customer chooses to self-install or hire a third-party contractor, the customer assumes full responsibility for the project's quality and related risks.
Showroom & Documents
Customers are welcome to visit our commercial showroom on the 9th floor of the Bank of East Asia Building in Mong Kok for on-site testing and material inspection.
