Lewmar Low Profile Deck Hatch This Lewmar Low Profile Deck Hatch features smaller ventilation hatches suitable for any deck location on sailboats and larger sizes that can be used as foredeck hatches on smaller to mid-size yachts. With a low frame section and 8mm acrylic windows, this hatch is available in multiple sizes making it a good choice for installation on a variety of boats. The lockable internal and external handles provide added security. Composed of corrosion-resistant clear anodized