Here are some general size recommendations: If your lamp is harp style, we recommend measuring the height of your harp to help us suggest the best lampshade size. 1.If your harp is under 7 inches, we suggest our M-size lampshade, as its height is sufficient to fully cover the harp's metal frame. 2. If your harp is between 7-9 inches, our Large-size lampshade is the best fit, as it's designed for this range. 3. If your harp is over 10 inches, you may need a larger lampshade, which we currently do not have in stock. in this case, we usually recommend switching to a shorter harp or removing the harp entirely to find a better match. If you are not sure if your lamp whether our shade please take a photo & send it to me ( take off the shade & bulb ). Note, please clearly show the lamp holder spec, & the height & width of your current shade in the photo so that I can check for you:) Before order, this item is unassembled please refer to the installation instructions in our package when you receive it. Our lampshade complements modern, rustic, or Japandi-style interiors with ease. Its soft pleats diffuse light gently, casting a cozy, warm ambiance that's perfect for any bedroom, living room, or kitchen, not only refreshes your home but also brings a touch of serenity to your everyday life. The neutral color seamlessly blends with your existing decor, enhancing your space without overwhelming it. Suitable for E27 (EU) / E26 (US) & E14 bulb base lamps, & each order comes with a lampshade frame & replacement ring. Made of fabric & PVC, this unique combination not only ensures a longer lifespan & greater flexibility than other materials but also makes cleaning a breeze. Not only look good but also easy to install & durable. Whether you're setting the mood in a bedroom, adding character to a living room, or spotlighting a kitchen, it provides the ambient lighting essential for creating a tranquil retreat. SMALL SIZE DIMENSION: Top diameter: 4.3/11cm Bottom diameter: 7.4/19cm Height: 6.2/16cm Slant height: 6.2/16cm MEDIUM SIZE DIMENSION: Top diameter: 4.13/10.5cm Bottom diameter: 10/25cm Height: 7.4/19cm Slant height: 7.8/20cm LARGE SIZE DIMENSION: Top diameter: 4.7/12cm Bottom diameter: 13/33.5cm Height: 9.2/23.5cm Slant height: 9.8/25cm Please feel free to message me if you need assistance or have any questions, I will get back to you ASAP Handmade Cream Flower Ruffle Fabric Tall Pleated Shade, For Standard Table Lamps Harp Uno Type Lamp, Pendant Wall Lighting Home Furnishing