Building a UV-A Light Box for the Alternative Photographic Process

I am constructing a UV light box. Most of these units, commercial or DIY, traditionally use tubes, such as F20T12/BL. For several reasons, I want to use the 365nm UV strips to build this one. I have a pdf file showing the array and dimensions that I will be using if you would like further info. Should the strips be connected in "series"? I am concerned the solderless connectors might add too much bulk or hold the strip "up" at each end thereby affecting the adhesion strip. I am qualified to solder if you feel that is a good option. 

Our 365 nm UV LED strip lights sound like a great option for your UV light box project!

First of all, to connect, both "series" and "parallel" can be used to connect the LED strip lights. The primary advantage of connecting them in parallel would be to avoid voltage drop, which may be an issue if you intend to use more than 10 ft of LED strip lights. One way around the voltage drop issue while keeping the "series" configuration is to power the LED strip array from both ends of the LED strip run. Below is an article that goes into a bit more depth and you may find helpful:

https://www.waveformlighting.com/home-residential/connecting-led-strips-in-series-vs-parallel

Next, if you are comfortable with soldering, we would definitely recommend soldering your own wires. This will not only save you some money on the connectors but will also allow you to keep the LED strips flush against the installation surface without bulging upwards (as you correctly mention) and maintain a more reliable wire connection. We do not have any solder requirements or specifications, but going off standard recommendations for LED components, we would recommend keeping soldering times below 10 seconds at 260 °C.