Concealed Linear Light Family Supplier China
2″, 2.75″ & 4″ Trimless “Mud-In” Recessed Linear Systems
Our concealed linear light family is a complete trimless “mud‑in” recessed linear system available in three aperture widths: 2″, 2.75″ and 4″. Designed to integrate directly into drywall ceilings and walls, these luminaires create pure lines of light with no visible frame, supporting minimalist and architectural lighting concepts across commercial, hospitality and high‑end residential projects.
Instead of treating each size as a separate product, we engineered them as one coordinated family so lighting designers, brands and contractors can mix widths freely while maintaining consistent optical quality, finishes and installation methods.

One System, Three Aperture Widths
The 2″ trimless recessed linear is the most discreet member of the family, ideal when a fine, minimal slot of light is desired.
- Slim 2″ (approx. 50 mm) aperture for subtle visual presence.
- Perfect for corridors, feature lines, perimeter accents and residential projects.
- Provides clean, continuous light lines without dominating the ceiling.
- Excellent for guiding circulation or highlighting architectural edges.

The 2.75″ trimless recessed linear balances minimal appearance with higher lumen output, making it a versatile choice for many commercial interiors.
- 2.75″ (approx. 70 mm) aperture suitable for offices, lobbies and retail areas.
- Strong enough for primary ambient lighting in open spaces.
- Available in both trimless mud‑in and flanged (trimmed) versions using the same LED platform.
- Ideal when you want a clean architectural slot that still reads clearly in the ceiling design.

The 4″ trimless recessed linear offers a wider aperture for projects that require more light or a stronger visual statement.
- 4″ (approx. 100 mm) aperture with higher lumen potential.
- Suitable for higher ceilings, larger corridors, reception halls and public spaces.
- Stronger ceiling presence while preserving the trimless, integrated look.
- A good choice for feature lines or when combining direct lighting with design emphasis.
Together, the 2″, 2.75″ and 4″ sizes allow you to build a coherent linear lighting language across different spaces and functions in the same project.
Shared Features Across the Family
All three concealed linear sizes share the same core engineering philosophy and many common components to simplify specification and procurement:
- Trimless “Mud‑In” Construction: Profiles are installed directly into drywall, then taped, mudded and painted so only the light aperture remains visible. The ceiling appears seamless, without exposed trims.
- High‑Efficiency LED Technology: LED boards are selected for high efficacy, stable color and long service life. Driver options are coordinated across the family to simplify controls and maintenance.
- Continuous Runs & Corners: Each width can be supplied in standard lengths and joinable modules for continuous rows. Lit corner modules and special angles help keep light uninterrupted around turns.
- Coordinated Optics & CCT: Similar diffuser and lens options, plus matching CCT and CRI ranges, ensure a consistent visual experience even when aperture width changes from room to room.
- Unified Finish & Detailing: All profiles are offered in matching finishes (typically matte white as standard, with other colors on request) so mixed widths still read as one designed family.
Typical Technical Options (Family Overview)
Exact values depend on final configuration, but the concealed linear family is generally available with:
- Aperture Widths: 2″ / 2.75″ / 4″.
- Lengths: Single fixtures (e.g. 2 ft to 8 ft) and continuous rows.
- Input Voltage: 120–277 V AC.
- Power & Lumen Packages: Multiple wattages per foot to match different ceiling heights and lighting levels.
- CCT Options: Typically 2700 K / 3000 K / 3500 K / 4000 K / 5000 K.
- CRI: 80+ standard; 90+ optional for hospitality and high‑end retail.
- Optics: Opal diffuser, low‑glare or micro‑prismatic lens; wall‑wash variants on request.
- Controls: 0–10 V dimming as standard, with options for DALI and emergency configurations.
- Mounting: Designed primarily for drywall / gypsum ceilings and select wall applications.
- Certifications: Targeted for commercial markets (e.g. UL / cUL and others as required).
Application Scenarios by Width
Using three different apertures within the same concealed linear system lets you fine‑tune both lighting performance and visual hierarchy:
- 2″ – Subtle Guidance & Accent Lines:
Ideal for perimeter lighting in living rooms, hotel rooms and lounges; hallways where you want a fine light line instead of a dominant fixture; feature details along walls or ceiling niches. - 2.75″ – Flexible General Lighting:
Suited for open office ceilings and collaboration zones; retail aisles, circulation areas and back‑of‑house corridors; lobby ceilings and transition spaces in commercial buildings. - 4″ – High Output & Bold Lines:
Best for high‑ceiling public spaces, atriums and large corridors; reception halls, galleries and multi‑purpose areas; spaces where the linear opening is also a design feature.
Within one project, you can use 2″ in guest rooms, 2.75″ in corridors and offices, and 4″ in lobbies, all sharing the same trimless construction and light quality.

OEM / ODM Support for Your Brand and Projects
As a factory‑level partner, we can help you build a complete concealed linear program around these three sizes:
- Private‑label concealed linear families based on 2″, 2.75″ and 4″ apertures.
- Adjusted wattage, lumen output, CCT and CRI tailored to office, hospitality or residential product lines.
- Custom corner pieces, special angles and specific lengths for your standard details.
- Documentation, drawings and photometric data for catalog use and project specification.
Whether you are a lighting brand expanding your architectural linear catalog, or a project‑driven buyer looking for a complete concealed linear system in multiple widths, this family offers a stable, scalable platform to build on.













