These foam tubes fit into our 1" thin-walled polycarbonate led diffused blade tubes. 1 meter in length.
It is recommended to wrap your led strips in a layer such as blade film or clear wrap not only for additional diffusion but also if using RGB led strips with white blade styles. When mixing all three colours to create white the led dies can in some rare cases produce enough heat to distort the foam. In testing this has not been demonstrated to be of concern when using RGBW strips as only one led per die is used to generate white.
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