ECG / EKG Medical Grade Recording Chart Paper, Z-Fold Pad, Red Grid, 216 x 280 x 218, Double (2) Queue Mark's, Equivalent to Quinton 036869-001 Fits Quinton models: Q-Stress and 3000 Treadmill. (sold by the pad, 10 pads per case) Availability: Usually ships the same business day Quinton 036869-001 equivalent A114062$9.89 Copyright 2006-2011, A1cardiology.com