8W Compact Recessed
Small openings and focused commercial retrofit tasks where depth is limited.
View Product Commercial Ceiling Lighting
LED Downlights Matched to Ceiling and Task
For LED downlights, first decide whether your ceiling can take a recessed fitting or needs a surface-mounted one. Then compare the beam, light level and driver for the space.
- Recessed DL models with published cut-out sizes
- Surface-mounted SH cylinders with their own fixing and input requirements
- Model-specific optics, controls and protection options to check before sampling
Two installation routes
Start with the ceiling opening or mounting surface
Recessed and surface-mounted LED downlights need different ceiling supports and electrical checks, even when they light the same room.
VST publishes recessed DL models from 8W to 90W and surface-mounted SH models from 50W to 150W. The DL pages specify cut-out sizes, while the SH pages describe a cylindrical housing and mounting options. Treat these as distinct routes: a ceiling opening cannot be inferred from a surface-mount photograph, and a high-output SH body cannot be substituted for a small recessed trim. Record the ceiling construction, target task, voltage, beam, controls and available service space. An LED downlight supplier can then identify a credible model and sample for the actual installation.
Cut-out fit
A recessed model must match the existing opening and leave adequate depth and driver space above the ceiling. Check the published cut-out range, not only trim diameter.
Surface support
A cylindrical downlight needs a suitable structural fixing and cable route. Confirm the mount and access rather than treating the decorative ceiling finish as the support.
Optical task
Beam angle and glare change how a workspace, corridor or product display feels. Compare the published distribution with a lighting layout and sample.
Control interface
Dimming options vary with driver configuration. Check the actual control protocol, voltage and commissioning responsibility before a project quantity is released.
VST supply
Separate optical and mounting decisions
VST, an LED downlight manufacturer, can identify the DL or SH model, its mounting method and the available documents in the quotation.
Two published families
VST has both recessed DL and surface-mounted SH product pages. That allows a ceiling project to compare installation routes without forcing one housing into every space.
Ceiling coordination
Share the opening or fixing method, available depth and cable route. VST can narrow the options before a sample is ordered, while the project team confirms structural suitability.
Light measurement
Integrating-sphere checks can support output, color temperature and CRI discussions. Ask which report and configuration match the selected model and market.
Option control
CCT, CRI, optics and dimming are discussed against the actual driver and housing. Do not assume one listed option transfers across all DL and SH models.
Repeat specification
Keep the approved drawing, sample, driver, finish, label and carton details with the order. Later deliveries can then be checked against the same configuration.
Product boundary
Recessed and surface-mounted downlights
A ceiling opening, fixing method and beam matter more than moving up a wattage list.
Recessed VST DL downlights fit specified circular openings and have a trim, reflector or lens, LED light source, heat sink and driver. The published DL range uses AC200–240V and IP42 on its product pages. Surface-mounted SH models use a cylindrical die-cast housing on a ceiling interface; their pages list AC180–240V and IP54, with IP65 optional. These ranges describe different constructions. Compare cut-out or mounting method, clearance, beam, output, environment and controls before approving LED downlights for a single project.
Published routes
Models for different ceiling tasks
When comparing LED downlights, choose the mounting type first. Each linked VST LED downlight manufacturer page gives the details for a specific DL or SH model.
20W Office Recessed
Office ceiling upgrades needing a larger documented output and matching cut-out.
View Product 
52W Showroom Recessed
Large retail or showroom zones with defined beam and ceiling-opening needs.
View Product 
50W Office Surface Mount
A cylindrical option where recessed work would disrupt the ceiling.
View Product 
80W Showroom Surface Mount
Higher output in a visible cylinder for presentation spaces.
View Product 
150W High-Output Surface Mount
Large public interiors with limited fixture positions and a supported ceiling structure.
View Product Selection Controls
Four design checkpoints
Check ceiling fit, structural support, light distribution and driver compatibility separately.
Opening dimension
For recessed DL products, compare both trim and published cut-out size with the actual ceiling opening.
Mounting structure
A surface cylinder needs adequate fixing and a safe cable path; product weight and ceiling capacity belong in the installation review.
Beam choice
Use the model’s optical options and mounting height to evaluate coverage and glare at the task plane.
Driver control
Confirm that the selected driver supports the requested dimming system; a control name on another model is not transferable.
Fixture architecture
Components that change the installation
The LED source, optic and mounting hardware affect different parts of the installation.
Light source
LED package
The LED array sets the initial light-producing surface inside the downlight. Its output interacts with drive current, temperature and optic, so a photograph of lit LEDs cannot establish the final delivered lumens or color rendering. Compare the published data for the selected DL or SH model and use the approved sample where visual appearance matters.
Optic
Reflector or lens
A reflector or lens shapes the beam reaching a desk, display or circulation surface. The available angles differ across series, and the same wattage can perform differently under a narrow or wide optic. Select the optical option using mounting height, task area and glare limits, then keep its model reference with the lighting layout.
Mount
Ceiling interface
The fixing method carries the luminaire and defines access to the cable and driver. Recessed spring clips depend on a suitable cut-out and ceiling thickness; a surface bracket depends on a different structure. The selected image and drawing should match the ordered body, and the building support must be checked separately.
Company and cooperation
The people behind the specification
The videos introduce VST and a customer relationship. Product pages provide the model data needed for selection.
Company overview
VST's company video introduces its lighting work. For beam, cut-out, input voltage and protection, check the selected DL or SH model page.
Customer perspective
The customer video gives a view of working with VST. It cannot establish the light level or ceiling fit of a particular downlight.
Applications
Choose a ceiling route for each space
For LED downlights, the ceiling and task determine whether a recessed or surface-mounted fitting makes sense.
Meeting rooms
A recessed downlight can keep a meeting-room ceiling uncluttered if the opening and space above it are suitable. Measure the cut-out and depth, then check the table position, beam and dimming needs. VST can compare DL models and supply a sample for the intended ceiling and controls.
Office retrofits
Cutting new openings in a finished or solid ceiling may be disruptive. Check the structure that will carry a surface-mounted cylinder, its wiring path, room height and required light on the work surface. VST can shortlist SH models and provide the driver and fixing details for a sample installation.
Retail presentation
A showroom needs clear product light without glare or unwanted reflections. Map the merchandise, mounting positions, beam, CCT and control scenes. VST can compare DL and SH models and provide photometric data for the chosen configuration.
Hospitality lobbies
A lobby may need different light at reception, in circulation areas and at seating. Check the ceiling structure, comfort, maintenance access and any dimming schedule. VST can use the layout to suggest an SH model to sample in the selected area.
Industrial work areas
A dry workshop may need more light and easier service access than a small office. Check mounting height, structural support, task needs, dust exposure and controls. VST can compare published higher-output models; the project team still needs to verify the ceiling and local installation requirements.
Define the ceiling
Shortlist LED Downlights for Your Space
Send a ceiling photo or drawing, the cut-out or mounting surface, ceiling height, task area, voltage, dimming needs, quantity and market. As your LED downlight supplier, VST can compare recessed and surface-mounted models and quote a configuration to sample.
Technical Detail
Downlight Specification by Construction
The DL and SH LED downlights use different mounts and input ranges. Compare them by model.
| Recessed DL models — Published model | Power | Output | Cut-out |
|---|---|---|---|
| VST-DL-8W-RRA044 | 8W | 850 lm | Ø68–72mm |
| VST-DL-10W-RRA043 | 10W | 1,100 lm | Ø75–80mm |
| VST-DL-15W-RRA046 | 15W | 1,500 lm | Ø95–108mm |
| VST-DL-20W-RRA046 | 20W | 2,400 lm | Ø118–132mm |
| VST-DL-32W-RRA046 | 32W | 3,500 lm | Ø145–155mm |
| VST-DL-42W-RRA046 | 42W | 4,300 lm | Ø162–180mm |
| VST-DL-52W-RRA046 | 52W | 5,500 lm | Ø205–230mm |
| VST-DL-72W-RRA046 | 72W | 7,000 lm | Ø205–230mm |
| VST-DL-90W-RRA046 | 90W | 8,000 lm | Ø205–230mm |
| Surface SH models — Published model | Power | Output | Body |
|---|---|---|---|
| VST-SH50W-C | 50W | 6,500 lm | D200 x H145mm |
| VST-SH60W-C | 60W | 7,800 lm | D200 x H145mm |
| VST-SH70W-C | 70W | 9,100 lm | D200 x H145mm |
| VST-SH80W-C | 80W | 10,400 lm | D200 x H145/H245mm |
| VST-SH100W-C | 100W | 13,000 lm | D200 x H245mm |
| VST-SH120W-C | 120W | 15,600 lm | D200 x H245mm |
| VST-SH150W-C | 150W | 19,500 lm | D200 x H245mm |
CCT, CRI, beam, housing finish, dimming and protection are discussed by series and selected driver. Surface and recessed structures are not interchangeable; confirm any changed configuration before sampling.
The LED downlight factory checks the approved source, optic, driver and housing assembly. Relevant checks can include electrical function, output, color, thermal condition, aging, appearance and packing where supported for that product.
Isolate power. For recessed DL units, verify cut-out, ceiling depth, spring-clip engagement and driver access. For surface SH units, verify bracket, structural fixing and cable route. Match input and control wiring to the approved model and local code.
Downlight Project Feedback
Comments on Ceiling Planning
Customers describe ceiling, driver and repeat-order questions raised during selection.
Ordering with VST
Downlight Cooperation Questions
Samples, pricing and lead time depend on the mounting type and driver selected.
Yes. VST can discuss samples for a relevant recessed DL and surface-mounted SH model where both remain viable. Supply the ceiling details first so each sample tests a real installation route. Any sample-charge credit against a later order requires prior agreement.
A lower-power standard unit may start around 100 pieces in discussion, while a higher-value fixture can have a lower starting quantity when appropriate. The actual MOQ depends on model, driver, optical option, packaging and customization and must be stated in the quote.
Private labels and cartons can be discussed for an approved downlight configuration. Artwork, product information and market requirements should match the exact model. A deeper housing or driver change may carry separate development or tooling cost.
Plan approximately 2–3 weeks of production for an approved standard model. A limited alteration usually needs 3–4 weeks, while extensive customization commonly needs 4–6 weeks. Transport adds time beyond these production ranges.
Regular downlights commonly have 3- or 5-year options, but the approved model, driver, operating conditions and market determine the offered coverage. Record the final term in the quotation instead of applying one claim across both product families.
Report the affected downlight model and order with fault details and visual evidence. VST will assess a verified product defect and discuss replacement supply, either independently or with a later shipment.
Product Questions
Downlight Selection Questions
These answers cover ceiling fit and light distribution after you have compared LED downlights.
No. Surface-mounted LED downlights and recessed DL bodies use different mounting interfaces. A surface cylinder needs a suitable fixing and cable route; a recessed body needs a compatible cut-out and plenum depth. Check the ceiling plan before ordering either product.
For recessed products, compare the published cut-out with the measured opening, then confirm trim diameter and depth. For surface models, check cylinder size, bracket space and the supporting substrate. A drawing or physical sample resolves tight clearances better than a front photograph.
| Route | Published input | Ceiling check |
|---|---|---|
| Recessed DL | AC200–240V | Cut-out and plenum |
| Surface SH | AC180–240V | Bracket and fixing |
LED output, optic, beam, mounting height and task geometry all influence useful light. The published DL and SH model pages show different efficacy and construction. Use a model-specific photometric file or layout when the project needs a target light level.
No. Published LED downlights in the recessed DL family list IP42, while surface SH pages list IP54 with IP65 optional. Specify the exact model and environmental exposure; the rating of one family cannot be assigned to another or to an unverified installation.
No. The pages list options, but actual compatibility depends on the selected driver, input supply and control protocol. Confirm the ordered driver and wiring before a sample is connected to an existing controller.
Record the model, body and mounting route, optic, CCT, driver, finish and relevant drawing. Check its fit and visual result in the intended ceiling. Retain that reference for approval of the final order and any later option change.