Red Line 5000 Melamine Short-Flow Mold Cleaner is used for compression cleaning of mold cavities with substantial wall thickness. Perform size is 2″ x 2″ x ¼”. It is a short flow compression-grade alpha cellulose filled melamine formaldehyde mold cleaning material. Because of its short flow, this melamine compression grade mold cleaner is generally more effective in removing mold staining than transfer grade cleaning melamines. Also available in a loose powder form.