How Do You Choose a Recessed COB Spotlight When the Ceiling Void Is Under 50mm?
Working with a ceiling void under 50mm? Check the true installation depth, driver space, and beam requirements before ordering recessed COB spotlights.
A customer recently needed recessed COB spotlights for a ceiling void of less than 50 mm. The main concern was simple: would the lamp, driver and wiring actually fit? For a shallow-ceiling project, always confirm the total installation depth—not only the height of the lamp body.
Why is the lamp body height not enough?
What else takes up space above the ceiling?
A 40 mm lamp body may still need extra room for spring clips, cable bends and the driver. Ducts, joists and insulation can reduce the usable space further. Ask the supplier for a section drawing showing the complete installation.
What should be confirmed before ordering?
Which project details affect the final choice?
Check the available ceiling depth, cut-out size, wattage, beam angle, voltage and dimming method. A low-profile fitting is only useful when its light output and beam also suit the project.
Should you test a sample first?
Yes. Install the sample in the actual ceiling and check the physical fit, driver position, beam effect and dimming response. This is much safer than finding an installation problem after the full order arrives.
What should you send to the supplier?
Send a ceiling section or site photo together with the available depth, cut-out, required wattage, beam angle and control method. This allows the supplier to check suitable models instead of sending a long, unrelated catalogue.
Frequently Asked Questions
Is cut-out size the same as installation depth?
No. The cut-out is the opening in the ceiling. Installation depth is the space required above it.
Can the driver be placed beside the spotlight?
Often yes, but the position, access and wiring clearance must be checked before installation.
Can every recessed spotlight be made under 50 mm deep?
No. The available depth depends on the lamp design, wattage, optical system and thermal structure. Confirm each model individually.
Working with a shallow ceiling? View our commercial lighting range, or send us your ceiling section and lighting requirements. We will help you narrow down the suitable options before sampling.