Able to block out light completely.
- Accordingly, in the present invention, the size of the lightproof box is fixed in order to solve the problem.
- Its high-density lightproof covering yields an essential improvement of the sound quality.
- On my darkroom door I hung up a lightproof curtain on a wire about 20 cm above the door, so that it goes well beyond the dimensions of the door at the top and at the sides.
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