Retrofit & Canless Downlights

A retrofit or canless downlight is an all-in-one LED recessed light that installs without building a full housing from scratch. A retrofit downlight screws into an existing recessed can using its lamp socket, upgrading old fixtures to LED. A canless downlight clips straight into a ceiling hole with spring arms, needing no can at all. Both come in 2- to 6-inch sizes with selectable color temperature. Lumera Electric carries retrofit and canless LED downlights for remodels and quick installs.

What's the difference between a retrofit and a canless downlight?

The difference is whether there's already a can in the ceiling. A retrofit downlight installs into an existing recessed housing, screwing into the old lamp socket to convert it to LED. A canless downlight needs no housing at all — it clips directly into a cut hole with spring arms and a remote junction box. Use retrofit to upgrade existing cans, canless for new holes with no housing.

Will a retrofit downlight fit my existing recessed can?

Most fit standard cans, but check two things. The retrofit size must match the can aperture — a 6-inch retrofit for a 6-inch can, 4-inch for 4-inch. It connects through the existing E26 lamp socket with an included adapter, so the can needs a working medium-base socket. Confirm the aperture and socket type before ordering to avoid a mismatch.

How does a canless downlight install without a housing?

Canless trades the can for a slim, self-contained design. You cut a hole, wire the remote junction box, and push the fixture in — spring arms grip the drywall from behind. Because it's only a couple inches deep, it fits shallow ceilings and tight plenums where a full can won't. The driver sits in the attached junction box, keeping the visible profile flat to the ceiling.

Are these downlights dimmable and color-selectable?

Most are both, built in. A selectable-CCT switch changes the light between 2700K and 5000K — warm to cool — on the fixture itself, so one unit covers every room. Dimming works with most standard LED dimmers, though compatibility varies by model. Some add a selectable-lumen switch to set brightness. Check the fixture's dimmer compatibility list before pairing a control.

Are retrofit and canless downlights good for insulated ceilings?

Yes, when the fixture is rated for it. Look for an IC-rated model, which can sit against insulation without overheating — standard for attic and top-floor ceilings. An airtight (AT) rating also blocks drafts between the ceiling and attic, cutting energy loss. Confirm the IC and airtight markings if insulation surrounds the fixture.

Prefer to build the fixture from parts instead of an all-in-one? Start with the can in Recessed Housings and pick the look with a matching Recessed Trim. Working in a fire-rated ceiling? Those go in Fire-Rated Housings.