The cross reference numbers above represent competitor products that are functionally equivalent to the Nitrotel product. Color codes, packaging, and some constructional differences may exist. While we have done our best with the cross references, we are not responsible for any errors. If you find an error, please bring it to our attention so that we make the correction. Please refer to the Nitrotel data sheet for specific details or contact your Nitrotel distributor for more information. Thank you.