UPSIDEUP.store :: Replacement Paper for ProjectBook, As both sides of this extra thick paper can be used the 40 pages actually turn into 80 useable pages! Alt + 010 Technical details: Material: recycled paper with double-sided crosshair print and a weight of 135 g/m². Dimensions: W 43 x H 63 cm / W 17 x H 24.8 inches Weight: approx. 1.9 kg Alt + 010 Delivery: 1 spiral pad with 40 sheets