ECG / EKG Medical Grade Recording Chart Paper, Roll, Red Grid, 216x46, Equivalent to: Burdick 007944 and 007937, Kendall 10869445, 3775869. Fits Burdick models E-310, E-320, EK670 and EK7 (sold by the roll, 25 rolls per case) Availability: Usually ships the same business day. Burdick 007944 equivalent A113009$8.34 Copyright 2003-2005, 2006 A1Cardiology.com