Serial Number Decal Model No. NTL24950 Serial No. Find the serial number in the location shown below. Write the serial number in the space above for reference. Visit our website at new products, prizes, fitness tips, and much more! QUESTIONS? If you have questions, or if there are missing parts, we will guarantee complete satisfaction through direct assistance from our factory. TO AVOID DELAYS, PLEASE CALL DIRECT TO OUR TOLLFREE CUSTOMER HOT LINE. The trained technicians on our Customer Hot Line