Get current pricing for Oal, FIRO/P-1MDS-4/6/36-3 Oal Model Firo/p-1mds-4/6/36-3l3l Bottle Neck Shrink Tunnel. Tunnel Has A 4w X 6h Opening Is 36 Long. There Are 3 Heating Elements In The Front . Product Category: Process Equipment, Sub Category: Overwrappers / Shrink: