The Domus SHADOW-LINE 900 is a surface-mounted LED vanityprofile 900mm, 9W,756864lm, 240V, in anodised aluminium,black or white.

Its figures are the ones that proved its sibling’s record wrong

• This model publishes 9W and 756 / 810 / 864lm. That is84, 90 and 96 lumens per watt.
• The 600mm model publishes 6W and 504 / 540 / 576lm which is the same 84, 90 and 96 lm/W, exactly.
• THAT AGREEMENT IS WHAT SETTLED IT. The 600’s product record publishes9W this model’s figure and at 9W the 600’s lumens would read 56, 60 and 64lm/W, matching nothing in the range. So the 600’s record carries this model’swattage, and its true figure is 6W.
• THIS MODEL’S OWN RECORD IS CORRECT. 9W is right for900mm.
• The useful general point: on a range sold at multiple lengths, dividing lumens bywatts across the lengths will expose any figure that has drifted because the same LED at two lengths must give the same efficacy.

It shares the IP20-versus-IP44 problem

The record publishes IP20 and the sheet’s footnote saysIP44. Both SHADOWLINE listings carry it and no other product in thecatalogue does. ON A VANITY LIGHT THAT IS THE FIELD THAT MATTERS MOST IP20 is no water protection at all and IP44 is splash-rated, and a bathroom zonerequirement turns on exactly that. We have published neither and asked Domus. Treat it as IP20 until confirmed, and ask us if your installation depends onIP44.

900 mm and how to choose between the two lengths

• THE RULE THAT WORKS: match the light to the mirror, not to the room. A 900mm profile over a 900mm mirror reads as designed; the same profile over a600mm mirror reads as a mistake.
• If the mirror is wider than 900mm, the profile can sit centred and shorter a continuous line reads well as long as it is symmetrical. What does not work is a profile slightly narrower than the mirror, which looks like it wasmeant to match and failed.
• On a double vanity, two 600mm profiles centred over each basin usually beat one longone because the light lands where faces are rather than spanning the gap betweenthem.
• 810lm at 4000K over a single basin is a comfortable working level. It is not a lot of light in absolute terms, which is correct a vanity light that is toobright is unpleasant to stand under.

A continuous line rather than lamps

Extruded 6063 aluminium with an opal PMMA diffuser gives an unbroken line of light. Against a fitting made of two or three discrete lamps, the difference on a face issubstantial discrete sources cast overlapping shadows and light one side morethan the other, and a continuous line does not. For shaving or makeup that evenness isthe entire reason to choose this over a cheaper multi-lamp fitting. 6063 with clear anodising is the same alloy and finish used in architectural glazing, which iswhy it survives a wet room.

Not dimmable

The sheet says so explicitly. Do not put it on a dimmer a non-dimmable driver on a dimmer circuit will flicker, buzz or fail. For vanity lighting that is rarely a loss, since it is task light wanted at full output oroff. Dim a separate ceiling circuit if the bathroom needs a low setting. An integral driver is included; a remote driver option exists for wall cavities that will nottake the depth.

What is published

Made to order

No lead time is published. Call our team to confirm. We will.

Where it works

• Above a 900mm mirror match the light to the mirror.
• Where even light on a face matters.
• As a picture light or shelf line it is a profile.
• Not on a dimmer.
• Not on a double vanity two 600s beat one 900.

Specifying it

Surface-mounted LED vanity profile, 900mm. 9W at 240V. 756lm warm,810lm neutral, 864lm cool. 6063 extruded aluminium with opal PMMA diffuser. Anodised, black orwhite. Not dimmable. Integral driver included. 50,000hrs. 3-year warranty. ITS FIGURES ARE WHAT PROVED ITS SIBLING’S RECORD WRONG. This model gives 84, 90 and 96 lm/W at9 W, and the 600 mm gives exactly the same three numbers at 6 W so when the 600’s record publishes 9 W,its lumens would read 56, 60 and 64, matching nothing. THE GENERAL POINT IS WORTH KEEPING: on a rangesold at multiple lengths, dividing lumens by watts across the lengths exposes any figure that has drifted,because the same LED at two lengths must give the same efficacy. It shares the IP20-versus-IP44disagreement.

Supplied and supported by Lights For You.

Questions

Is 9 watts right for this one?

Yes. This model publishes 9W and 756/810/864 lumens, which is 84, 90 and 96 lumens per watt and the 600mm model at 6W gives exactly the same three figures. Its own record is correct.

How did that prove the 600mm wrong?

The 600’s product record publishes 9W this model’s figure. At 9W the 600’s lumens would read 56, 60 and 64 lm/W, matching nothing in the range, where at 6W they match this model exactly. So the 600’s record carries this model’s wattage and its true figure is 6W.

Is that a useful test generally?

Very. On a range sold at multiple lengths, dividing lumens by watts across the lengths will expose any figure that has drifted because the same LED at two lengths must give the same efficacy. It settles wattage questions without needing to ask anyone.

Is it IP20 or IP44?

Its two records disagree the field says IP20 and the sheet’s footnote says IP44. Both SHADOWLINE listings carry it and no other product in the catalogue does. On a vanity light that is the field that matters most, since a bathroom zone requirement turns on exactly that. We have published neither and asked Domus. Treat it as IP20 until confirmed.

Which length should I choose?

Match the light to the mirror, not to the room. A 900mm profile over a 900mm mirror reads as designed; the same profile over a 600mm mirror reads as a mistake. If the mirror is wider than 900mm the profile can sit centred and shorter a continuous line reads well as long as it is symmetrical. What does not work is a profile slightly narrower than the mirror, which looks like it was meant to match and failed.

What about a double vanity?

Two 600mm profiles centred over each basin usually beat one long one, because the light lands where faces are rather than spanning the gap between them.

Is 810 lumens enough?

Over a single basin, comfortably. It is not a lot of light in absolute terms, which is correct a vanity light that is too bright is unpleasant to stand under. The value is in the evenness rather than the quantity: a continuous line does not cast the overlapping shadows that two or three discrete lamps do.