DOMUS SM KIT-303 BACKLIT PANEL FRAME

The Domus SM KIT-303 is a surface-mount frame for 312 × 312 mm backlit LED panels — 355 × 300 mm, 66 mm deep, in white.

⛔ Its documentation is the weakest of the four frames

• ⭐ The sheet held against this product is flagged both unverifiable and as the wrong sheet, ⭐ and its contents describe a panel — 10 W, 860 to 1,100 lumens, CRI ≥80.
• ⭐ THIS PRODUCT IS A FRAME AND EMITS NO LIGHT. ⭐ Those figures belong to the PANEL-303-BLT it holds.
• ⭐ ALL FOUR FRAMES IN THE CATALOGUE CARRY PANEL SHEETS; this one is simply the least trustworthy of them. ⭐ We have taken from it only what the product's own record corroborates — the dimensions and the finish — and quoted the panel figures as context rather than as this product's specification.
• ⭐ THE PRACTICAL EFFECT IS SMALL, because a frame has few specifications to get wrong. ⭐ What matters is the size it suits and the depth it adds, and both come from the record.

⭐ 312 × 312 mm — the smallest panel format, and where it earns its place

• ⭐ A 312 mm square panel at 10 W gives 860 to 1,100 lumens — ⭐ about a third of what a 600 mm panel does, in about a quarter of the area.
• ⭐⭐ THAT MAKES IT A FILL FITTING RATHER THAN A MAIN ONE. ⭐ It suits a store room, a small WC, a stairwell landing, a lift lobby, or the gap at the end of a corridor where a full-size panel will not fit.
• ⭐ IN A GRID CEILING ITS REAL JOB IS FILLING A HALF-MODULE — ⭐ a 600 mm grid does not always divide evenly into a room, and a small panel drops into the leftover tile where a large one cannot.
• ⭐ SURFACE-MOUNTED, IT BECOMES THE OPTION FOR A SMALL PLASTERBOARD CEILING — ⭐ a 355 × 300 mm box 66 mm deep, which in a WC or a store room is unobtrusive enough.

⭐ What the frame changes about the installation

⭐ A backlit panel is made to drop into a suspended grid, where the grid carries it. ⭐ On plasterboard or concrete there is no grid, so the panel has nothing to sit in. ⭐ The frame fixes to the surface and the panel sits inside it. ⭐⭐ THE ADVANTAGE OVER A PLASTER TRIM KIT IS THAT NO CEILING IS CUT — ⭐ which on a concrete soffit is not a convenience but the only practical option. ⚠ The cost is that the fitting is 66 mm proud rather than flush.

⭐ At this size, one person and four fixings

⭐ Unlike the 1,200 mm linear frame, a 355 × 300 mm frame is a one-person job and will not bow between fixings. ⭐ Fix into framing where you can; plasterboard anchors are adequate for something this small and light, which is not true of the longer frames in the family. ⭐ Check the position against the joists anyway if the ceiling is timber-framed — ⭐ a fixing that lands on a joist is always better than one that does not.

⭐ The panel it holds, for context

⭐ 10 W, 860 lm at 3000 K, 1,000 at 4000 K and 1,100 at 5700 K, CRI ≥80, switchable, not dimmable, 40,000 hours. ⭐ Note the lifespan is 40,000 hours rather than the 50,000 seen elsewhere in the Domus range — ⭐ at commercial duty of around 12 hours a day that is roughly nine years rather than eleven. ⭐ Operating range is −20 to +45 °C, which matters in an unconditioned store room or a roof space.

✅ What is published

Where it works

• ⭐ Store rooms, WCs, landings, lift lobbies — ⭐ a fill fitting.
• ⭐ Concrete soffits — ⭐ no cutting required.
• ⭐ Leftover grid modules — ⭐ where a full panel will not fit.
• ⚠ Not as a main room light — ⭐ 1,000 lm is a third of a 600 mm panel.
• ⛔ Not on its own — ⭐ the panel is a separate purchase.

Specifying it

Surface-mount frame for 312 × 312 mm backlit LED panels. 355 × 300 mm, 66 mm deep, white. Panel not included. ⛔ ITS SHEET IS FLAGGED BOTH UNVERIFIABLE AND AS THE WRONG SHEET, and its contents describe a panel — 10 W, 860 to 1,100 lumens — on a frame that emits no light. It is the weakest documentation of the four frames in this catalogue, all of which carry panel sheets. We took from it only what the product's own record corroborates. ⭐ THE PRACTICAL EFFECT IS SMALL, because a frame has few specifications to get wrong: what matters is the size it suits and the 66 mm depth it adds, and both come from the record. ⭐ AT THIS SIZE IT IS A FILL FITTING — store rooms, WCs, landings, and leftover grid modules.

Supplied and supported by Lights For You.

Download Datasheet (PDF)

Download Datasheet (PDF)