For blocking UV light in the 400-410nm wavelength range, we recommend using our 408 window, which provides an Optical Density (OD) of 5+ @ 190-420nm. You can find more details here: 408 Acrylic Window.
Yes, we offer custom cuts for our acrylic windows using our in-house laser cutter. We can also accommodate additional customizations, such as adding grommets and other modifications.
Polycarbonate windows tend to degrade faster over time, meaning their optical density qualities may diminish more quickly compared to acrylic. Acrylic typically maintains its protective properties for a longer duration.