ECG / EKG Medical Grade Recording Chart Paper, Z-Fold Pad, Red Grid, 50x70x260, Equivalent to Mortara 9100-021-50, 9100-001, 2455185. Fits Mortara model Eli 50 (sold by the pad, 100 pads per case) Availability: Usually ships the same business day Mortara 9100-021-50 equivalent A17719$3.79 Copyright 2006-2011, A1cardiology.com