As buid drawing : If you're looking for building or technical drawing details for the Toto L3 Rubber Cushion, these are typically found in the service manuals or technical documentation provided by Toto for specific toilet models. Here are the steps you can take to obtain the drawing details: Visit Toto's Official Website: Toto often provides technical drawings and parts catalogs that you can access for each product model. You can search for your specific toilet model (or the one the L3 Rubber Cushion is used in) to find the corresponding part diagrams or installation instructions. Toto's Parts and Service Catalog: Check for any downloadable parts catalogs or exploded diagrams that show the location of the L3 Rubber Cushion in the toilet system. These catalogs typically provide building drawings or details about each component. User or Service Manual: If you have a specific toilet model, look for the user or service manual that often includes technical drawings. This manual usually has diagrams for installation and maintenance, including part locations. Contact Toto Customer Support: If you can’t find the drawing or details online, Toto’s customer support team may be able to provide the technical documentation you need. You can request the specific technical drawing for the L3 Rubber Cushion part. Authorized Dealers or Service Centers: Authorized Toto dealers or service centers can also provide you with detailed technical drawings for replacement parts, including the L3 Rubber Cushion. Unfortunately, these kinds of drawings or CAD files are usually proprietary and not directly available through general sources, but Toto’s official channels will be the most reliable source for obtaining such documents. www.bechennai.com. Mobile no : 888 333 33 22.