Swap-Step 8W LED Dimmable Downlight Black / Tri-Colour - 21452

The Domus SWAP-STEP in black is a stepped-fascia recessed downlight — 8 W, 800–900 lumens, Ø90–100 mm cutout, 40 mm deep, 60° beam, IP44, IK05, dimmable.

⭐ The middle option — and usually the best value of the three

• ⭐ The three SWAP fascias differ only in depth and face profile: ⭐ SLEEK 35 mm flat, STEP 40 mm stepped, DEEP 56 mm anti-glare face.
• ⭐⭐ THE STEP COSTS ONLY 5 mm MORE DEPTH THAN THE FLAT SLEEK AND BUYS A REAL IMPROVEMENT IN GLARE. ⭐ A stepped fascia sets the emitter back behind a shoulder, so the source is shielded at the shallow viewing angles where a flat face shows it plainly.
• ⭐ THAT IS A GOOD TRADE ON MOST CEILINGS. ⭐ Very few voids that accept 35 mm will refuse 40, so the SLEEK's advantage is real only in genuinely tight situations.
• ⭐ THE DEEP IS BETTER STILL FOR GLARE, ⚠ but it needs 56 mm. ⭐ If the void allows it and the room is a bedroom or a lounge, take the DEEP; ⭐ for everything else the STEP is the sensible default.

⭐ Black fascia — a deliberate mark on the ceiling

• ⭐⭐ A BLACK DOWNLIGHT ON A WHITE CEILING IS A VISIBLE DOT, and that is a design decision rather than a compromise. ⭐ It reads as an intentional grid, which suits a modern or a commercial interior where the rhythm of the fittings is part of the composition.
• ⭐ IT ALSO REDUCES PERCEIVED GLARE. ⭐ A black face and inner absorb the light that would otherwise bounce out at an angle, so the fitting reads as a dark recess with light coming from it rather than a bright ring. ⚠ The trade is a little output, since a black inner absorbs what a white one reflects back.
• ⚠ ON A WHITE CEILING, BE DELIBERATE ABOUT THE LAYOUT. ⭐ Black fittings show every irregularity in the spacing that white ones forgive — a downlight 50 mm out of line is invisible in white and obvious in black.
• ⭐ ON A DARK OR TIMBER-LINED CEILING IT DISAPPEARS ENTIRELY, which is the other reason to choose it.

⭐⭐ The cutout range — and the field no record here carries

• ⭐ Ø90–100 mm, from the datasheet. ⭐⭐ THE RANGE IS THE POINT OF A “SWAP”: it drops into an existing hole anywhere between 90 and 100 mm, turning a failed downlight into a swap rather than a repair. ⭐ 43 products in this catalogue publish a cutout range.
• ⛔ AND WE MEASURED THAT 0 OF 843 RECORDS PUBLISH A CUTOUT AT ALL, against 87 datasheets that do. ⭐ On a recessed fitting it is the one dimension that cannot be corrected once cut, so it is published here from the sheet.
• ⭐ MEASURE THE EXISTING HOLE BEFORE ORDERING. ⚠ Over 100 mm this will not cover.

⭐ 60° beam and spacing

⭐ A 60° beam is narrower than the 90–120° a general-purpose downlight gives. ⭐⭐ THAT IS PART OF THE ANTI-GLARE DESIGN — less light escapes sideways — but it means a tighter grid. ⭐ On a 2.4 m ceiling, space them roughly the ceiling height apart rather than 1.5× it, so about 2.4 m between centres for general lighting. ⚠ A 60° fitting spaced like a 120° one leaves scallops of darkness between the pools, which is the commonest reason a downlit room feels patchy. ⭐ At 800 lm each they are a general-lighting fitting rather than a feature one.

⭐ IP44, IK05 and a 35,000-hour life

⭐ IP44 covers splashing water from any direction — enough for a bathroom outside the direct wet zones, ⛔ not a shower enclosure. ⚠ Confirm the zone. ⭐ IK05 is an impact rating, published by only 23 products here. ⭐ Dimmable with suitable dimmers on an integrated driver with flex and plug — ⚠ a mismatched dimmer gives flicker and buzz rather than a clean failure. ⭐ 35,000 hrs is over thirty years at three hours a day, so it is not a practical constraint.

✅ What is published

Where it works

• ⭐⭐ Most ceilings — ⭐ the best depth-to-glare trade of the three.
• ⭐ Modern and commercial interiors — ⭐ a deliberate black grid.
• ⭐ Dark or timber-lined ceilings — ⭐ it disappears.
• ⚠ Not spaced like a 120° fitting — ⭐ scallops of darkness.
• ⛔ Not in a shower enclosure — ⚠ IP44.

Specifying it

Recessed LED downlight, stepped fascia. 8 W at 240 V AC. 800/900/850 lm at 3000/4000/5700 K switchable. CRI ≥80, 60° beam. Cutout Ø90–100 mm, fitting depth 40 mm. IP44, IK05. Clear lens, dimmable driver with flex and plug. 35,000 hrs. Black fascia. Five-year residential warranty per the sheet. ⭐ THE STEP COSTS ONLY 5 mm MORE DEPTH THAN THE FLAT SLEEK AND BUYS A REAL IMPROVEMENT IN GLARE, because a stepped fascia sets the emitter back behind a shoulder and shields the source at the shallow viewing angles where a flat face shows it plainly. Very few ceiling voids that accept 35 mm will refuse 40, so the SLEEK's advantage is real only in genuinely tight situations — which makes the STEP the sensible default on most ceilings. ⚠ ON A WHITE CEILING, BE DELIBERATE ABOUT THE LAYOUT: black fittings show every irregularity in the spacing that white ones forgive, and a downlight 50 mm out of line is invisible in white and obvious in black.

Supplied and supported by Lights For You.

Download Datasheet (PDF)