15cm, 18cm, 20cm, 25cm, 30cm, 35cm, 40cm, 45cm, 50cm, 60cm FLAT Lampshade Diffuser, Custom Light Shade Polypropylene for Ceiling Lights, Uk Opaque FLAT polypropylene lampshade diffuser. These Flat diffusers sit inside the bottom ring of the lampshade to diffuse the light & also prevent you seeing the light bulb & bulb holder. Only used on Ceiling fittings. These are made from polypropylene. Please note these diffusers will fit my shades, they have been cut for that purpose, I cannot guarantee that they would fit other peoples shades. PLEASE NOTE THESE ARE NOT LAMPSHADES PLEASE NOTE THESE ARE FLAT These are measured as follows in cm to fit my shades. May not fit other lampshades exactly so will need to accurately measure. 15cm 18cm 20cm 25cm 30cm 35cm 40cm 45cm 50cm Returns & exchanges 7 days Buyer is responsible for return postage costs & any loss in value if an item isn't returned in original condition. Outgoing Postage is non refundable Flat Polypropylene Lampshade Diffuser, Custom Ceiling Light Shade - UK