One 2 Inch Koto Module Fits Four Aperture Sizes, and It Is Usually a Separate Line
Eight thousand listings sounds like eight thousand fixtures. It is not. ELCO builds around a modular platform, so most of what you see here is a piece of a fixture rather than a fixture. The same 2 inch light engine turns up behind a 3 inch trim, a 6 inch trim, a pendant body and a track head. Understanding that collapses the catalog from unmanageable to about four decisions.
How the 8,033 listings actually break down
Grouping by what the part does rather than by its catalog type is the only way to see the shape of this range. Roughly half of it is engines, trims, housings and accessories that combine into a finished light. Recessed work specifically is cross-listed into recessed lighting, which is the place to compare ELCO against the other downlight manufacturers here.
Decorative and surface fixtures are the largest group at 2,097 listings, covering pendants, monopoints, surface mounts, wall and step lights. Light engines and modules follow at 1,922, meaning the LED source that drops into a housing or body. Accessories and components account for 1,482 listings of lenses, louvers, brackets, connectors and mounting parts.
Housings and frames add 708 new construction and remodel cans plus mounting frames, and trims and reflectors add 564 visible rings, reflector cones and baffles. Track covers 552 listings of rail, heads, connectors and accessories.
The rest is smaller. Complete downlights, already assembled under one part number, account for 383 listings, tape light and its channels for 84, and a final 241 cover drivers, transformers, connectors, lenses and ceiling mounts.
Note the ratio. Only 383 listings are a complete downlight you can order as a single line. Everything else in the recessed part of the range assumes you are assembling from pieces.
The Koto system, and why one module covers so much
Koto is ELCO's modular platform and 1,304 listings here carry the name. The manufacturer describes the module as built around a 2 inch aperture with the driver mounted on the module itself and a twist and lock connection to the trim, which is what makes it swappable without tools. ELCO's own product pages state that the Koto module works with 2, 3, 4 and 6 inch recessed housings and Koto trims. They also state that the system converts 5, 6, 7 and 8 inch housings down to a 2, 3 or 4 inch downlight.
That is why the same module reappears across form factors. Inside this collection the Koto name attaches to reflector trims, pendants, surface mounts, monopoints and track heads as well as recessed positions. Track heads built on the platform sit in track and accent lighting alongside the rest of the track range.
The line that catches people out
ELCO's product pages for the surface, monopoint, pendant and track bodies state that they work with the 2 inch standard Koto module sold separately. So on those items the body and the light source are two orders, not one. If a quote for a run of pendants looks unusually cheap against a competitor's finished fixture, check whether the module is in it.
What the listing data does and does not tell you
Being straight about this matters more on a range this size than on a small one. Aperture size is tagged on 3,258 of the 8,033 listings and missing on the rest, so filtering by aperture will hide parts rather than narrow them. Voltage is tagged on 1,477. Dimming protocol is named on a small minority of the product descriptions, mostly as 0-10V with a handful naming TRIAC or ELV.
The practical consequence is that the filters do less work here than the product title does. Read the title, which consistently carries the aperture, the family name, the color temperature and the finish, and open the listing for anything the title does not state. Trims and reflectors specifically are collected in recessed trims, which is a cleaner starting point than filtering the brand page.
Where ELCO sits in Lumera's collections
Six type collections carry part of the brand and ELCO is the dominant name in two of them. All 574 of its surface fixtures make up most of surface mount fixtures, which holds 739 products in total.
Beyond that, 1,513 parts are in recessed lighting, 769 in track and accent, 452 in recessed trims and 329 in pendant lights.
Smaller groups reach further out: 81 listings appear in tape light, 24 in power and distribution and 12 in under-cabinet lighting.
Those collections overlap, so counting each product once gives 3,679 of the 8,033 filed by type. The remaining 4,354, largely the modules, engines, components and accessories, are reachable from this page and from site search only. On a brand this size that is worth knowing before you go looking for a specific trim in a category collection.
What to confirm before ordering
Recessed work is inspected for clearance, insulation contact and fire rating as well as wiring, and the inspector decides, a line Lumera draws in its installation and code disclaimer. The fields below vary part to part across this range.
- What you are actually buying. Housing, engine, trim or a complete fixture. This is the first check on every ELCO part.
- Module included or separate. On surface, pendant, monopoint and track bodies the Koto module is frequently a separate order.
- Aperture. 2, 3, 4, 6 and 8 inch appear, and the tag is missing on more than half the listings, so read the title.
- Housing type. New construction and remodel housings mount differently and are not interchangeable once the ceiling is closed.
- Insulation contact and airtight rating. Required in insulated ceilings. Confirm on the specific housing.
- Color temperature. 1800K through 5000K here, with 2400K and 2700K common on the warm end. Mixing values in one ceiling shows.
- Beam angle. On the adjustable Koto modules the beam is set at the fixture, so agree it before the crew is on a ladder.
- Dimming. Named on a minority of listings. Confirm the protocol against the driver rather than assuming.
- Voltage. 120V dominates where it is stated, with 277V, 12V and 24V groups behind it.
Modules, housings and trim questions on ELCO
Does an ELCO recessed light come as one part number?
Usually not. Only 383 of the 8,033 listings here are a complete downlight ordered as a single line. The normal pattern is a housing, a light engine or Koto module, and a trim, which is three part numbers for one hole in the ceiling. Check what a listing includes before you count fixtures, because a quote built from housings alone will arrive with nothing that lights.
What is the Koto system?
It is ELCO's modular downlight platform, built around a 2 inch LED module with the driver mounted on it and a twist and lock connection to the trim. The manufacturer states that the module works with 2, 3, 4 and 6 inch housings and Koto trims, so one engine can serve several aperture sizes across a project. That is also why 1,304 listings here carry the Koto name across recessed, pendant, surface, monopoint and track forms.
Will a 2 inch Koto module work in a 6 inch hole?
According to ELCO's published material, yes, through the system's housings and trims, and the range includes parts that convert 5, 6, 7 and 8 inch housings down to a 2, 3 or 4 inch aperture. That is the usual reason to choose the platform on a remodel, where the existing cans are large and the design calls for a small aperture. Confirm the specific conversion part against the existing housing before ordering.
Why does the aperture filter miss so many products?
Because the aperture tag is only present on 3,258 of the 8,033 listings. Filtering by size therefore narrows to the tagged subset rather than to everything of that size, and the parts you want may sit outside it. The titles are more reliable than the filters on this brand, so searching the aperture as text usually returns more than the filter does.
What is the difference between a new construction and a remodel housing?
How it mounts. A new construction housing fixes to the joists before the ceiling goes up, and a remodel housing clips into a hole cut in a finished ceiling. They are not interchangeable, and choosing the wrong one is discovered on site rather than at the desk. Decide it against the stage of the job, not against the fixture you like.
Are the trims and modules cross-compatible across the range?
Within the Koto platform the module and trim are designed to lock together, which is the point of the system. Across the wider ELCO range there are older reflector, baffle and engine families that follow different fit rules. Match parts inside one family rather than assuming a trim from one series seats in another housing, and confirm against the product page when a project mixes generations of the catalog.
