Yes, you can cut the LED strips to fit custom installations.
For Flow Strips:
Cutting: These strips can be cut after every single LED. To avoid cutting too much, we recommend trimming a little bit at a time.
For RGBW Strips:
Cutting: These strips can be cut every 3 LEDs. If you accidentally cut between 1 or 2 LEDs, trim off the remaining LEDs in the group of 3. The strip will still function normally.