The Domus GTA-652 is a spare clear acrylic diffuser for theMONACO series 160 150mm, supplied on its own.

It is stocked, not made to order which changes what it is for

• Every other spare in this group is made to order with a ten-business-day leadtime. THIS ONE IS NOT.
• THAT CHANGES THE CALCULATION ENTIRELY. The argument for keeping a sparepanel on a shelf is that damage is discovered when you want it fixed, not ten days beforehand andon a stocked part that argument largely disappears.
• SO BUY THIS ONE WHEN YOU NEED IT rather than in advance, and reserve theshelf-spare approach for the made-to-order ranges where it earns itskeep.
• STOCK STATUS CAN CHANGE. If a MONACO installation is critical acommercial entrance, a body-corporate frontage a spare on hand is still cheapinsurance.

Clear acrylic, and what that means for how it ages

• The material is named: clear acrylic. It is the only sparein this group that publishes one, and for a diffuser the material is the specification that predicts itslife.
• ACRYLIC YELLOWS AND CLOUDS UNDER UV RATHER THAN CRACKING. The lightoutput falls gradually, often by enough to notice long before anyone identifies thecause.
• AND CLEAR ACRYLIC SHOWS IT MORE THAN OPAL DOES. An opal panel is alreadydiffusing, so a little clouding changes little; a clear panel is meant to be invisible, so any yellowingreads directly as discolouration. Expect a clear panel to need replacing sooner than anopal one in the same position.
• IT IS ALSO THE PANEL WHERE THE LAMP CHOICE SHOWS. Behind clear acrylicthe lamp is visible, so a decorative filament-style lamp reads as part of the fitting where a bare LEDarray looks like hardware.
• ACRYLIC IS ALSO LIGHTER AND FAR LESS BRITTLE THAN GLASS, which is why itis used at height and near driveways it survives the stone a mower throws, where glass doesnot.

160 150 mm a dimension you can actually check against

This listing publishes 160 150mm. THAT IS MORE THAN MOST OF THE SPARE PANELS IN THIS CATALOGUE GIVE YOU several publish nodimension at all, which for a part bought to fit something is the one specification thatmatters. So you can measure your existing panel and compare before ordering, rather thanrelying on the series name alone. Still confirm the series: Domus’s traditional exteriorranges share a visual language but not their parts, and the GT code on the fitting is the reliableidentifier.

A single panel, not a set when that is right

• This is supplied as one diffuser rather than a full set.
• A SINGLE PANEL IS THE RIGHT PURCHASE ON A NEW OR RECENT FITTING, wherenothing has aged enough to mismatch.
• ON A WEATHERED LANTERN IT IS THE WRONG ONE. A new clear panel beside threesun-yellowed ones is conspicuous and more so on clear acrylic than on opal, because the yellowingis exactly what a clear panel shows.
• IF SEVERAL PANELS HAVE AGED, ASK US ABOUT REPLACING THEM TOGETHER even where a set is not listed, ordering the quantity you need at once keeps themmatched.

What this part does not have, and why that is right

No voltage, no wattage, no IP rating, no lamp base. A DIFFUSER ISPASSIVE AND SHOULD PUBLISH NO ELECTRICAL SPECIFICATION. It correctly publishesdimensions and a warranty. That is unusual: 83 of 104 passive parts inthis catalogue carry an electrical field they cannot have. This page is what a sparepart’s record should look like the dimensions that determine fit, the material that determineslife, and nothing it does not have.

What is published

Where it works

• Repairing a recent MONACO fitting nothing to mismatch.
• Impact-prone positions acrylic survives what glass does not.
• When you need it it is stocked.
• Not one panel into a weathered lantern clear shows the age gap.
• Not ordered on the series name alone check the 160 150mm.

Specifying it

Spare clear acrylic diffuser for the MONACO series. 160 150mm. Supplied as a singlepanel. No electrical parts. 1-year warranty. IT IS STOCKED RATHER THAN MADE TO ORDER, WHICH IS UNUSUAL IN THIS GROUP AND CHANGES WHAT IT ISFOR. The argument for keeping a spare panel on a shelf is that damage is discovered when you want it fixed,not ten days beforehand and on a stocked part that argument largely disappears, so buy this one when youneed it. IT ALSO NAMES ITS MATERIAL, WHICH FOR A DIFFUSER IS THE SPECIFICATION THAT PREDICTS ITS LIFE:acrylic yellows and clouds under UV rather than cracking, and CLEAR acrylic shows that more than opal does,because a clear panel is meant to be invisible. Expect it to need replacing sooner than an opal one in thesame position but to survive the stone a mower throws, where glass would not.

Supplied and supported by Lights For You.

Questions

Should I keep one as a spare?

Less than on the other ranges here. Every other spare in this group is made to order with a ten-business-day lead time, and this one is stocked the argument for a shelf spare is that damage is discovered when you want it fixed, not ten days beforehand, and on a stocked part that argument largely disappears. Buy it when you need it. The exception is a critical installation like a commercial entrance, where a spare on hand is still cheap insurance and stock status can change.

Why does the material matter?

For a diffuser it is the specification that predicts its life. Acrylic yellows and clouds under UV rather than cracking, and the light output falls gradually often by enough to notice long before anyone identifies the cause. This is the only spare in this group that publishes a material.

Does clear acrylic age differently from opal?

It shows the ageing more. An opal panel is already diffusing, so a little clouding changes little; a clear panel is meant to be invisible, so any yellowing reads directly as discolouration. Expect a clear panel to need replacing sooner than an opal one in the same position.

Is acrylic worse than glass?

Different. Acrylic is lighter and far less brittle, which is why it is used at height and near driveways it survives the stone a mower throws, where glass does not. Glass does not yellow, but it etches in coastal air and it breaks outright, so it fails suddenly where acrylic fails gradually.

Does the lamp choice show through it?

More than through an opal panel. Behind clear acrylic the lamp is visible, so a decorative filament-style lamp reads as part of the fitting where a bare LED array with a visible driver board looks like hardware.

Can I check it will fit?

Yes, and that is worth noting because most spare panels here do not let you. This listing publishes 160 x 150mm, so you can measure your existing panel and compare before ordering rather than relying on the series name. Still confirm the series by the GT code on the fitting Domus’s traditional exterior ranges share a visual language but not their parts.

Should I buy one panel or several?

One is right on a new or recent fitting, where nothing has aged enough to mismatch. On a weathered lantern it is the wrong purchase a new clear panel beside three sun-yellowed ones is conspicuous, and more so on clear acrylic than on opal because the yellowing is exactly what a clear panel shows. If several have aged, order the quantity you need at once.