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Learn more by watching our NLS 20185 | 170mm Extension Plate Suit 90mm Downlights White 170mm Overal video.
Additional related video.
The NLS 20185 is a metal extension plate for 90mm recessed downlights, fitting ceilings with a 170mm overall diameter. The 20185 bridges gaps between old ceiling cavities and modern 90mm downlight fittings. It's commonly used in retrofit and renovation work where ceiling heights or existing mounting points don't align with the downlight body.
Replacing or upgrading older recessed lighting often leaves gaps between the trim ring and the ceiling. These gaps expose unfinished plasterboard edges, accumulate dust, and look incomplete. The extension plate closes the gap, creating a clean junction while distributing the downlight's weight across a larger ceiling area.
The NLS 20185 offers a simple and fast installation path for electricians and builders upgrading 1980s and 1990s downlight installations. It's a straightforward metal spacer that requires no wiring, no tools beyond a drill, and minimal on-site assembly. The strong hold on the ceiling eliminates the need for additional bracing on most standard drywall ceilings.
The NLS 20185 is not suitable for exterior walls, damp environments, or weatherproof installations. Do not use the 20185 in bathrooms, laundries, kitchens with direct water exposure, or any location subject to splash or rain.
Verified Sparky Direct customer reviews: NLS 170mm Extension Plate (20185)
A strong hold on the ceiling. Easily holds the 90mm downlight. — Derek
The extension plates are metal, not plastic. — John
(20185)
The internal hole is 95mm, which accommodates standard 90mm downlight bodies with a small clearance. The internal bevelled edge at 105mm helps centre the downlight as it's inserted.
The 20185 works on plasterboard, fibre cement, and suspended ceiling systems. It holds best on solid substrates like timber frames. Check the ceiling structure and ensure the mounting points can support the downlight weight.
The extension plate fills gaps from approximately 100mm to 170mm, depending on the exact diameter of the old aperture and the position of the new downlight body.
No. The 20185 is not rated for exterior, damp, or wet locations. Use it only on interior ceilings, away from bathrooms, laundries, and kitchens with splash exposure.
The extension plate itself requires no electrical work. However, connecting the downlight to power must be done by a licensed electrician in accordance with AS/NZS 3000 and local electrical regulations.
The 20185 is supplied in white, matching standard interior plasterboard and most downlight trim rings.
The NLS 20185 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | NATIONAL LIGHT SOURCES |
| SKU | 20185 |
| Model # | 20185NLS |
| Barcode # | 9336700009632 |
| Package Weight | 0.165kg |
| TYPE | VALUE |
|---|---|
| Type | Lighting |
| Brand | NLS |
| Colour | White |
| External measurements outside rim | 170mm |
| Internal Hole size | 95mm |
| Internal bevelled edge size side to side | 105mm |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.
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