$35 Phototron on Marketplace

You should check out the LED Strips thread here if you haven’t, there’s a ton of good info on using them for stuff besides top lights, like on the walls of tents or as under lights/intracanopy. The Bridgelux strips come in various power levels and diode density per foot, so you could probably really customize it for your cab and even do like spectrum control or whatever with different color temp strips mixed. There’s some real gurus here when it comes to the low-power, low-cost strip builds for micro cabinets and other things sort of like a Phototron, guys like @Mr.Sparkle @Gpaw @Shadey @nube @ReikoX and a bunch of others whose advice I’d trust implicitly.

For a snazzy but probably overpowered option you could play with some SolStrips or SolStix from @Baudelaire ’s SolStrips lighting company, they look really high quality, he has them built to his specs just like LEDTeknik does with those Buddies I link to below, they both have a great understanding of what makes the difference between an average and a professional grade light, I know B specs a copper PCB board waaaaay thicker than you get on an HLG Quantum Board or the like, which means better thermal stability and heat transfer from the diodes, increasing lifespan and the practical max voltage they can run at.

I’ve used a pair of these with some good results on the walls of my tent and then another grow as intracanopy lights strung through the lowest set of branches, they’re expensive but they’re so awesome: great LEDs, waterproof, rugged, super easy to set up. I didn’t want to get into the DIY strips yet and they were a good answer for me, I’d endorse them to folks and I’m gonna try the other colors at some point, I only have the High-CRI white at the moment:

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