Known usage:
• (2) per Catalina 309 with in mast furling Seldén Rig
• (3) per Catalina 350 with in mast furling Seldén Rig
• (2) per Catalina 385 with in mast furling Seldén Rig
• Catalina 440
• Catalina 445
• Possibly other models with in-mast furling Seldén Rig

Verify dimensions are correct for your mast before ordering.

• Width: 57mm (~ 2-1/4")
• Height: 126 mm (~ 5")

These covers are designed to cover the access holes and are not intended to be water tight. We have received batches from the supplier that have passed their inspection for production mast use that have varying degrees of curvature present at the top and bottom of the cover plate. See secondary image showing an example of the possible curvature and acceptable gap when installed on the mast.