The maximum length of one roll of light strip is 15m, so (20m= 2rolls 10m; 30m=2rolls 15m). Length: 1m /2m /3m /5m /10m /15m /20m /30m. Item: RGB Led Strip. RGB Led Strip. Color: RGB. The panel of the 1m 2m 3m length light strip is black and suitable for use as a TV background light strip.
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