This particular light was used during different years depending upon the model of the boat. Your anchor light model sometimes depended upon who built the mast as the mast builder may have used a different brand of light than Catalina used on deck.

1982 to 1998 models with in-house built masts:
• Capri 18
• Capri 22
• Capri 25
• Capri 26
• Catalina 22
• Catalina 25
• Catalina 250
• Catalina 27
• Catalina 270
• Catalina 28
• Catalina 30
• Catalina 320
• Catalina 34
• Catalina 36

Later boats (about 2005) with masts supplied by Seldén Spars:
• Catalina 309
• Catalina 315
• Catalina 320 MkII
• Catalina 350
• Catalina 355

See alternate part #Z3366 in the May We Also Suggest section below.

Both Z2004 & Alternate Part's Visibility:
• Distance: 2 NM
• Coverage: 360°

#Z2004 Dimensions:
• Height: 2-15/16"
• Width: 2-1/2"

Alternate Part #Z3366 Dimensions:
• Height: 2-5/8"
• Width: 2-5/16"

Both Are US Coast Guard Approved: Yes

Our mast mount tubes found in the May We Also Suggest section below includes mount holes for both the Aqua Signal and Hella hole patterns.

1) To open the housing a #1 Philips screw driver is required, not included.

2) Aqua Signal changed the design of the fixture in 2011. If your fixture was made in 2010 or earlier, the replacement bulbs are festoon style with concave tips. If your fixture was produced after 2011, you need festoon style bulbs with convex, conical tips. If your fixture was made in 2011, it may have used either style, so you will need to verify which bulb you need. C-309, C-310, C-315, C-320, C-34, C-350