Hatch Cover
- Model A Long Circular Handhole Cover
- Model A Long Circular Oil Tank Hatch Cover
- Model A Single Side Opened/Closed Weathertight Hatch Cover ( Butterfly Clip)
- Model B Circular Handhole Cover
- Model B Circular Oil Tank Hatch Cover
- Model B Both Side Opened/Closed Weathertight Hatch Cover (Dog Clip)
- Model C Quick Acting Weathertight Hatch Cover (Central Rotating Clip)
- Model D Quick Acting Buried Weathertight Hatch Cover (Collapsible Dog Clip)
- Model E Single Size Opened/Closed Non-weathertight Hatch Cover (Butterfly Clip)