158cm wide, fine quite open weave cotton muslin which has been made fire retardant. (And it works too.) Not absolutely transparent, it comes in white with a lovely soft hand.
60 wide Egyptian Draping Muslin Fabric Ivory - per metre : : Home & Kitchen
Fire Retardant Fabric – White – Bramport Supply Co.
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White 100% Cotton Gauze by the Full Yard on Sale for 5.99 a Yard 48 Wide White Cotton Muslin Fabric Soft and Crinkly Cotton Fabric
White Cotton Muslin Fabric Cloth House • Cloth House
EGYPTIAN COTTON MUSLIN White - 100% Cotton Fabric Drapes £5.99 - PicClick UK
Alexandria Egyptian Cotton Fabric Off White, by the yard
Muslin Fabric Egyptian Cotton
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DCF 10 Mts White Cotton Muslin Voile Fabric Curtain : : Home & Kitchen
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FR Treated Unbleached Muslin Buy Fire Retardant Muslin Here