ECG / EKG Medical Grade Recording Chart Paper, Roll,Array (Blank Grid), 57x45, Equivalent to Seiko TP57B45 Fits Welch Allyn Model B-P Lifesign 52STP (sold by the roll, 100 rolls per case) Availability: Usually ships the same business day Seiko TP57B45 equivalent A113705$2.29 Copyright 2006-2011, A1cardiology.com