GTA-131 CHESTER SERIES DIFFUSER ONLY

The Domus GTA-131 is a replacement diffuser for the CHESTER series — Ø165 mm, aluminium frame, supplied on its own.

⛔⛔ Its title and its web address name two different parts

• ⭐ The product is titled GTA-131 CHESTER SERIES DIFFUSER ONLY. ⛔ Its handle — the page's own web address — is gta-140-43mm-post-top-adaptor.
• ⭐⭐ A DIFFUSER PANEL AND A POST-TOP ADAPTOR ARE DIFFERENT OBJECTS DOING DIFFERENT JOBS. ⭐ One is the panel a lantern glows through; the other is the fitting that joins a lamp head to a post.
• ⭐ MEASURED: of 70 products carrying a GT or GTA code in both their title and their handle, 69 agree and 1 does not. ⭐ This is it.
• ⭐⭐ THIS BREAKS THE RULE WE HAVE USED THROUGHOUT THIS PROGRAMME. ⭐ Where a product record disagreed with its title, the title won — on lamp bases, on voltages, on IP ratings. ⛔ Here the title and the handle disagree with each other, so neither can arbitrate the other.
• ⭐ SO WE WENT TO A THIRD SIGNAL, AND THE RECORD SUPPLIES ONE. ⭐ It publishes diameter = Ø165 mm and material = Aluminium. ⭐⭐ A 43 mm POST-TOP ADAPTOR IS NOT Ø165 mm. ⭐ The dimension matches a diffuser and rules out the adaptor.
• ⭐ WE HAVE WRITTEN THIS PAGE AS THE CHESTER DIFFUSER, which the title and the dimension agree on. ⚠ The handle is wrong — and a handle is the public URL, so this is a wrong link rather than only a wrong field. ⭐ Confirm with us before ordering if you came here looking for a post-top adaptor; you are on the wrong page and we will point you at the right one.

⭐ What a diffuser-only part is for

• ⭐⭐ THIS IS A SPARE, AND ITS EXISTENCE IS THE POINT. ⭐ A lantern's diffuser is the part that breaks — hail, a stone from a mower, a ladder, UV over years — while the casting, the lampholder and the wiring are all still sound.
• ⭐ WITHOUT A SPARE PANEL, A CRACKED DIFFUSER MEANS REPLACING THE WHOLE FITTING — ⭐ and on an exterior lantern that means an electrician, not a householder.
• ⭐ WITH ONE, IT IS A TEN-MINUTE JOB. ⭐ On a made-to-order range this matters more than usual, because the fitting itself is not held in stock — replacing a whole lantern would mean the lead time as well as the cost.
• ⚠ IT ALSO KEEPS A RUN MATCHED. ⭐ Replacing one lantern in a row of six with a new one puts a fresh finish beside five weathered ones; replacing a panel does not.

⭐ Identify the series before ordering

• ⭐ This panel suits the CHESTER series specifically. ⚠ Domus's traditional exterior ranges share a visual language but not their parts.
• ⭐⭐ THE RELIABLE WAY TO IDENTIFY A FITTING IS THE GT CODE, not the shape. ⭐ It is usually on the original invoice or on a label inside the fitting. ⚠ Two lanterns that look alike across two ranges will not swap panels.
• ⭐ IF YOU CANNOT FIND A CODE, MEASURE. ⭐ This panel is Ø165 mm; a panel from an adjacent range will differ by enough to be obvious. ⭐ Send us the measurement and a photograph and we will confirm before you order.
• ⭐ ORDER THE SET, NOT ONE PANEL, IF MORE THAN ONE HAS AGED. ⭐ A new panel beside three sun-yellowed ones is more conspicuous than four evenly aged ones.

⭐ What this part does not have, and why that is correct

⭐ No voltage, no wattage, no IP rating, no lamp base. ⭐⭐ A DIFFUSER PANEL IS PASSIVE — it has no electrical parts and should publish no electrical specification. ⭐ This one correctly publishes only a diameter, a material and a warranty. ⚠ That is worth stating because it is unusual: 83 of 104 passive parts in this catalogue — diffusers, bases, adaptors, brackets and spares — do carry an electrical field they cannot have. ⭐ An absent specification on a passive part is not a gap; it is the right answer.

⛔ Made to order

Allow up to 10 business days for production. ⚠ Worth planning for on a spare part — a broken diffuser is usually discovered when you want it fixed, not ten days beforehand. ⭐ On a property with several of these lanterns, keeping one spare panel on a shelf turns a ten-day wait into an afternoon.

✅ What is published

Where it works

• ⭐⭐ Repairing a CHESTER lantern — ⭐ not replacing it.
• ⭐ Keeping a run matched — ⭐ a panel, not a new fitting.
• ⭐ As a shelf spare — ⭐ it removes the ten-day wait.
• ⚠ Not ordered on shape alone — ⭐ confirm the GT code.
• ⛔ Not if you wanted a post-top adaptor — ⭐ ask us.

Specifying it

Replacement diffuser panel for the CHESTER series. Ø165 mm, aluminium. Supplied on its own. No electrical parts. Made to order, up to 10 business days. 1-year warranty. ⛔⛔ THIS PAGE'S TITLE AND ITS WEB ADDRESS NAME DIFFERENT PARTS — GTA-131 Chester diffuser against GTA-140 43 mm post-top adaptor, which are different objects doing different jobs. Of 70 products carrying a GT or GTA code in both their title and their handle, 69 agree and this one does not. That breaks the rule we have used throughout this programme, where the title arbitrates a disagreeing record — here the title and the handle disagree with each other. ⭐ SO WE WENT TO A THIRD SIGNAL: the record publishes Ø165 mm, and a 43 mm post-top adaptor is not Ø165 mm. The title is right, the handle is wrong, and a handle is the public URL. If you came here for a post-top adaptor, ask us — you are on the wrong page.

Supplied and supported by Lights For You.