ECG / EKG Medical Grade Recording Chart Paper, Z-Fold Pad, Red Grid, 152x90x160, Equivalent to: Corometrics 4305 and 4305AAO, Kendall 30597226, 3845789 Fits Corometrics models: 115, 116, 118, 145, 150 and 155 (sold by the pad, 100 pads per case) Availability: Usually ships the same business day. Corometrics 4305 equivalent A113431$1.86 Copyright 2003-2005, 2006 A1Cardiology.com