Fluorescent Replacement

[securespark]

I have a mirror cabinet in the bathroom that has two 18W fluorescent fittings in. One by one they died, so I want to swap them out.

The actual gear has died, so I'll be taking the fittings out and sourcing LED fittings of a suitable length to replace them.

But what would be the equivalent in terms of brightness?

 

[JohnW2]

I have a mirror cabinet in the bathroom that has two 18W fluorescent fittings in. One by one they died, so I want to swap them out.
The actual gear has died, so I'll be taking the fittings out and sourcing LED fittings of a suitable length to replace them.
But what would be the equivalent in terms of brightness?

Assuming that you want to stick with 'tubes' ....

.... as I often say (and despite contrary opinions expressed by others), regardless of the numbers (watts and lumens), my personal experience is that replacing a fluorescent tube with an LED of the same length near always results in illumination at least as good as the fluoro provided.

 

[flameport]

But what would be the equivalent in terms of brightness?

On lumens only it's roughly half the wattage, so LED of about 10W.

There are other considerations such as what direction(s) the light is emitted, colour temperature, tubes take several minutes to achieve full brightness and old tubes will have less output than when they were new.

 

[securespark]

Yes, I need to stick with a linear fitting. The LED fittings I've seen of the same length are designed for under-cabinet use and vary wildly in wattage. The most I've seen is 7W for a fitting 395mm in length.
The existing one is 440.

They are fitted behind glass, either side of the main cabinet, so the light goes mainly straight out, but a little goes to the left or right, depending which side the fitting is mounted on and illuminates the cabinet interior through glass windows in the cabinet.
The colour temp is cool white.

I'll get some pics of the cabinet.

 

[securespark]

Here's the outside of the cabinet with the two compartments that contain the flus at the moment.

And inside, you can see the glass windows that let light in to the interior of the cabinet.

And inside one of the compartments

 

[securespark]

Can't find anything bigger than 7W that will physically fit inside the compartment.

 

[JohnW2]

Can't find anything bigger than 7W that will physically fit inside the compartment.

How long a fitting can you accommodate?

 

[foxhole]

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[RF Lighting]

Hey Simon have you considered some LED strip stuck to the back of the cabinet compartments where the existing strips are mounted? It’s fairly easy to source strips rated at 5W per meter and looking at your cabinet it wouldn’t be difficult to fit 3 linear meters of strip in there running up and down so all the light is directed at the diffuser panels. It’s also easy to source your preferred colour temperature of light.