Agilent / HP / Keysight 87441A87441A STM-1/OC-3 Filter Request a Quote: N/A Find Info Buy Used Rent Sell Note: Federal Resellers: We Do Not Sell New Equipment QTY * Options Name * Company E-mail * Phone Comments Leave this field blank 90 Day Warranty Included 12 Month Warranty Available Save 80% - 90% from New Calibration Available Questions? Call 888-505-8378