Reviewed

This article follows the content creation and review process of het Helian Expert Team. Every figure is checked against our own test records before publication.

Technical review Weili Wu, Engineering Lead

Naam project

HL-A002 — Mitte Concept Boutique, Berlin Ceiling-Corner Cove Lighting

Project City

Berlin, Germany

Project Description

Mitte Concept Boutique, a 280 m² fashion flagship in central Berlin, installed continuous linear light lines at the wall-ceiling junction of the retail floor, the fitting rooms and the back-office corridor. The HELIAN HL-A002 ceiling-corner profile was specified because it accepts a max 13 mm wide LED strip on its main face and a max 7 mm wide strip on its inner corner, allowing the same profile to wash the wall side and the ceiling side at independent brightness.

User Pain Points and Needs

  • Need 1 — Two-direction wash from one channel. The design called for asymmetric brightness on wall vs ceiling from a single fixture line in the corner.
  • Need 2 — Continuous, gap-free corner runs. Retail walls of up to 8 m required single-piece lines through 90° ceiling corners without mid-span joints.
  • Need 3 — Concealed corner installation. The profile had to disappear into the drywall corner with only the diffuser face visible.
  • Need 4 — One supplier for profile and optics. PC and PMMA diffusers had to come from the same manufacturer as the profile body.

Oplossing

HELIAN supplied the HL-A002 profile from its A-Series:

  • Body: AL 6063 aluminium with anodised or painted silver surface.
  • Lighting source width: max 13 mm / max 7 mm (asymmetric dual-channel).
  • Cover (PC / PMMA push-in): PC; Cover Model BAPL001 / BAPL02S.
  • Accessories: End Cap, Clip, Suspended Rope (Set), Connector.
  • Lengte: 4 m / max.
  • Application: Ceiling corner lighting.

Application Image

HL-A002 Toepassing
HL-A002 Toepassing

Implementation Results

  • Asymmetric corner wash. The 13 mm and 7 mm channels delivered independently dimmed wall and ceiling illumination from a single corner fixture.
  • 8 m single runs. Per-side runs up to 8 m were supplied in 4 m stock lengths and joined cleanly at the corner.
  • Concealed profile. Only the diffuser face is visible; the aluminium body hides fully in the drywall corner.
  • Fire / smoke compliance. PC cover across the entire scheme satisfied the building code with a single material declaration.
  • Quantified outcome. 320 m of HL-A002 installed across retail, fitting rooms and corridor; the dual-channel scheme cut fixture count by 33% vs the originally specified separate wall and ceiling strips.

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