For Lancaster, Use The 7-L7 Uv Lamp (7-Lwt-Uv7; 7-Lwt-Uv010). Product Details All UV lamps listed are compatible brand (LSE Lighting) UV products. We do not sell Lancaster brand UV lamps. All Lancaster brand names, trademarks and logos are property of Lancaster. Brand: LSE Lighting - Type: Ultraviolet UV Bulb 254nm UV-C - EPA Est. No. 96823-PA-1 Length: 16 1/2" Lamp Shape: T5 - Base: 4pin (4pins ON ONE END) This replacement UV Bulb by (LSE Lighting) brand is 100% compatible for use with Lancaster 7-LWT-UV7 7-LWT-UV010 water purifiers. All UV lamps listed are compatible brand (LSE Lighting) UV products. We do not sell Lancaster brand UV lamps. All Lancaster brand names, trademarks and logos are property of Lancaster. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.