If you've got lamps that are just too bright or harsh, these GO&SO lamp shade diffusers are the perfect solution for creating soft, comfortable lighting in any room! You get two 10.5 inch (267mm) frosted white acrylic diffuser plates that fit perfectly inside circular drum lampshades ranging from 11.5 to 14 inches. The acrylic material is premium quality - not that cheap flimsy plastic - and it works beautifully to soften the blinding effect of bare bulbs while still allowing plenty of light through. Installation is super simple: these white plates install on both the top and bottom of your lampshade to create a complete diffusing effect. The inner hole diameter is 3/8 inch (about 1mm) with a thickness of 1/18 inch (0.15mm) - designed specifically for standard lampshade fittings. The drum shape works with table lamps, floor lamps, pendant lights - pretty much any lighting fixture that uses a circular shade. Before installing, just remember to peel off the transparent protective film to reveal the beautiful frosted finish. It's important to confirm your lampshade's inner diameter before purchasing to ensure proper fit. When installing at the top of a desk lamp, leave a little room around the edges for heat to escape and prevent overheating. These diffusers transform harsh, direct light into soft, ambient illumination that's much easier on the eyes - perfect for creating a cozy atmosphere in bedrooms, living rooms, or any space where you want comfortable lighting. They're not just functional either - the clean white modern style adds a charming decorative touch to your lampshades. Say goodbye to squinting in bright light and hello to perfectly softened illumination!