Perfect Size:Round Lampshade Diffuser 30.5cm/12inch, Fits 13-14 Lampshade Openings(Please confirm the Openings of the lampshade before purchasing. Please refer to the picture example for the installation effect of the lampshade and diffuser.). Can support arbitrary size customization. Advantage:30.5cm/12inch lampshade diffuser. Made of 1/18 (1.4mm) thick DOUBLE SIDED frosted white acrylic sheet with a 3/8 (10mm) center hole. It is sturdy, heat-resistant, and has a long service life. Suit for living room, bedroom, study,office. ETTER QUALITY LIGHT - Softly frosted Removes light bulb glare,Soften the light diffuse the harsh glare from stylish drum shades Instruction: Just directly put the acrylic board on the top or bottom of the lampshade.Dual use for mounting on top of your table lamp shade or floor lamp shade or fits the top or bottom of most hanging drum-style pendant light and floor lampshde Beside lampshade fixtures Application: This lamp shades for table lamps diffuser can soften and diffuse the light of the bulb, great for eliminating glare from CFL or LED bulbs, improves visual comfort by reducing eyestrain, creating a more comfortable, eye-friendly lighting. You can also use it to direct light downward for accent or improved reading light. It provides soft and evenly distributed light, creating a pleasant and comfortable reading and working atmosphere in your living space NOTE: 1.Please carefully confirm the inner diameter size of the lampshade before purchasing.2. When the Lampshade Diffuser is installed at the top of the desk lamp cover, to avoid overheating your lamp leave a little room on the edge to let heat escape ASIN B0H7C3B833 Size 12×12 inch-2 pcs Color White-Round Shape Round Pattern Solid Brand Name GO&SO Style Name Modern Finish Types Unfinished Manufacturer GO&SO Model Number G12-YKL-305-2 Material Type Acrylic, Plastic Mounting Type Freestanding Shade Material Plastic Number of Items 1 Number of Pieces 2 Additional Features Freestanding, Frosted Acrylic Diffuser, Lined Included Components 12 Diameter Round Lampshade Diffuser Fits 13-14 Openings shade, Lampshade Diffuser Item Dimensions W x H 12 W x 12 H Recommended Uses For Product Ceiling Fixture Shade, Ceiling Lights, Chandelier Shade, Lampshade Diffuser for Lighting Accessories, Table Lamp Shade Manufacturer Warranty Description Please carefully check the size of the lampshade to ensure that it can be perfectly compatible and matched with your lamp.