The Domus GTA-94 is a post-top thread adaptor for thetraditional exterior range aluminium, in five colours, made toorder.

The part that makes a lantern and a post into a fitting

• A POST-TOP LANTERN AND A POST ARE TWO SEPARATE THINGS, AND SOMETHING HAS TO JOINTHEM. This adaptor is the threaded connector that does it.
• IT IS THE COMMONEST OMISSION ON AN OTHERWISE COMPLETE ORDER. The lanternis specified, the post is specified, the cable is run and the adaptor is discovered on installationday, when the two parts will not meet.
• ON A MADE-TO-ORDER RANGE THAT IS A TEN-DAY STOP, not a trip to the wholesaler. The post is standing, the cable is live, and the lantern is on the ground.
• SO CONFIRM THE FULL PARTS LIST BEFORE ORDERING lantern, post,base, adaptor and tell us the arrangement rather than the part numbers if you are unsure. We wouldrather check than have you wait.

“Traditional exterior range” spans several families confirm the thread

• Traditional exterior range is a range description rather than a partnumber. It covers several families TURIN, VIENNA, PARIS, CHESTER, AVIGNON,SIENA and others which share a visual language but not necessarily everycomponent.
• THE THREAD IS WHAT HAS TO MATCH, AND A THREAD IS NOT SOMETHING YOU CAN JUDGE FROM APHOTOGRAPH. Diameter, pitch and length all have to be right, and a nearly-right threadis worse than an obviously wrong one because it will start and thenbind.
• THE RELIABLE IDENTIFIERS ARE THE GT CODE ON THE ORIGINAL FITTING plus the outside diameterof the post at its top. Measure and send us the figure with a photograph of theexisting joint.
• IF YOU ARE JOINING PARTS FROM TWO DIFFERENT FAMILIES, ASK FIRST. Itsometimes works and sometimes does not, and the answer is not deducible from thelistings.

Five colours on a part that barely shows

Beige, black, burgundy, green and white, applied to order. THE ADAPTOR SITS AT THE JOINT BETWEEN LANTERN AND POST, SO IT IS MOSTLY HIDDEN but amismatched collar at that joint is exactly the sort of detail that reads aswrong. Order it in the colour of the post and lantern it is joining, not the colour therange was originally specified in; on a property lit ten years ago those maydiffer. And expect a new adaptor to be brighter than the weathered parts either side ofit. At a joint that is usually acceptable, and it is one of the few places on anexterior fitting where a slight mismatch genuinely does not matter.

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

• No voltage, no wattage, no IP rating, no lamp base. AN ADAPTOR IS STRUCTURAL, NOT ELECTRICAL the cable passes through it, but the adaptoritself has no electrical parts.
• IT CORRECTLY PUBLISHES ONLY A WARRANTY. That is unusual in thiscatalogue: 83 of 104 passive parts carry an electrical field they cannothave.
• WHAT IS GENUINELY MISSING IS THE THREAD SPECIFICATION. For a connector,the thread is the whole product and it is not published. Ask us and we willconfirm with Domus before you order.
• THE SAME APPLIES TO ITS DIMENSIONS a length and an outsidediameter would let a buyer check compatibility without asking, and neither islisted.

Cable continuity through the joint

The supply cable runs from the post, through the adaptor, into the lantern. LEAVE ENOUGH SLACK AT THE JOINT TO MAKE THE CONNECTION COMFORTABLY, and dress the cable so itis not pinched as the adaptor is threaded home a cable trapped in a thread is afault that appears months later, when vibration has worn through theinsulation. Check the cable entry is protected against the aluminium edge, and that anygrommet is seated before final assembly. This is an electrician’sjob.

Made to order

Allow up to 10 business days for production. Which is exactly why it shouldbe ordered with the fitting rather than after it.

What is published

Where it works

• Ordered WITH the lantern and post not after.
• Replacing a corroded joint keeping post and lantern.
• Where the post outside diameter is known.
• Not ordered on the range name alone confirm the thread.
• Not across two families without asking first.

Specifying it

Post-top thread adaptor to suit the traditional exterior range. Aluminium, five colours appliedto order. No electrical parts. Made to order, up to 10 business days. 1-year warranty. THIS IS THE PART THAT MAKES A LANTERN AND A POST INTO A FITTING, AND IT IS THE COMMONESTOMISSION ON AN OTHERWISE COMPLETE ORDER. The lantern is specified, the post is specified, the cable is run and the adaptor is discovered on installation day, when the two parts will not meet. On a made-to-orderrange that is a ten-day stop with the post standing and the lantern on the ground. “TRADITIONAL EXTERIORRANGE” IS A RANGE DESCRIPTION RATHER THAN A PART NUMBER, and the thread is what has to match diameter,pitch and length, none of which is judgeable from a photograph, and a nearly-right thread is worse than anobviously wrong one because it will start and then bind. THE THREAD SPECIFICATION IS NOT PUBLISHED. Askus.

Supplied and supported by Lights For You.

Questions

What does this part do?

It joins a post-top lantern to its post. A lantern and a post are two separate things and something has to connect them; this is the threaded adaptor that does it.

Why does it get forgotten?

Because it is invisible in the specification. The lantern is chosen, the post is chosen, the cable is run and the adaptor is discovered on installation day, when the two parts will not meet. On a made-to-order range that is a ten-day stop rather than a trip to the wholesaler, with the post standing and the lantern on the ground.

How do I make sure I order the right one?

Confirm the full parts list before ordering lantern, post, base, adaptor and tell us the arrangement rather than the part numbers if you are unsure. We would rather check than have you wait.

Will it fit my post?

That depends on the thread, and “traditional exterior range” is a range description rather than a part number it covers several families that share a visual language but not necessarily every component. The thread has to match on diameter, pitch and length, none of which is judgeable from a photograph, and a nearly-right thread is worse than an obviously wrong one because it will start and then bind.

What should I send you?

The GT code on the original fitting, the outside diameter of the post at its top, and a photograph of the existing joint. If you are joining parts from two different families, ask first it sometimes works and sometimes does not, and the answer is not deducible from the listings.

Is the thread specification published?

No, and for a connector the thread is the whole product. Its dimensions are not listed either a length and an outside diameter would let a buyer check compatibility without asking. Ask us and we will confirm with Domus before you order.

Which colour should I order?

The colour of the post and lantern it is joining, not the colour the range was originally specified in on a property lit ten years ago those may differ. The adaptor sits at the joint so it is mostly hidden, but a mismatched collar there is exactly the sort of detail that reads as wrong. Expect a new adaptor to be brighter than the weathered parts either side; at a joint that is usually acceptable, and it is one of the few places on an exterior fitting where a slight mismatch genuinely does not matter.