Home Boat Maintenance Manholes & Hatches 18” Raised Multi-Bolt Manholes with Bolts (Stainless Steel) ICF 18” Raised Multi-Bolt Manholes with Bolts (Stainless Steel) $725.99 18” Raised Multi-Bolt Manholes with Bolts (Stainless Steel) quantity Add to cart Product Details Product Details Stainless Steel. A: 18″. B: 23″. Coaming Height: 2-1/2″.
