Schiller ECG paper/Welch Allyn ECG paper (SC2157-014A) is designed for AT1 and SP1 electrocardiographs.
This particluar Schiller or Welch Allyn ECG paper is 90mm x 90mm in size and comes in packs of 280 sheets, which are sold in boxes of 50 packs. It is z-fold, red grid paper.
