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Open Box Ikelite 5511.5 Modular 8 Dome Port with 5.1 Lens Extension Kit

Ikelite  |  SKU: IKE-5511.5+VG
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Condition Note

May be missing original packaging and minor blemishes (not noticeable after 1-2 dives). This product does not carry a valid manufacturer warranty.

Product Conditions

  • Open Box: Generally unused, returned from a customer, with minor blemishes that are not noticeable. Original packaging may be damaged or missing.
  • Like New: May be slightly used but looks almost new, with minor blemishes that are not noticeable. Original packaging may be damaged or missing.
  • Very Good: Shows signs of use with a few more blemishes. Original packaging may be damaged or missing.
  • Good: Shows more signs of use with noticeable blemishes. Original packaging may be damaged or missing.
  • Acceptable: Heavily used with more blemishes. Original packaging may be damaged or missing.


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Product Information


The Ikelite Modular 8" Dome Port with 5.1" Lens Extension Kit includes our Modular Lens Extension for lenses up to 5.1 inches (12.9 cm) in length (product number 5510.28). The Lens Extension threads onto the base of the Modular 8-inch Dome for simple assembly.

Lens Extensions are available in a variety of lengths to accommodate most popular wide angle and zoom lenses. Additional extensions can be purchased separately and used with this Modular 8-inch Dome. A Modular Glass Flat Front can be added in place of the 8-inch Dome to use the Lens Extension with compact macro lenses.

Features: Dome Port with 8" Diameter and Shade

  • Neoprene port cover
  • 5.1 in lens extension
  • Silicone lubricant 1cc tube
  • Depth Rating: 200
  • Injection-Molded Acrylic Front Element
  • For Wide-Angle DSLR Zoom Lenses
  • Mounts onto All Ikelite DSLR Housings


  • ⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

    Frequently Asked Questions

    What size lenses fit the Ikelite FL 8 inch Dome Kit?

    With the dome attached, this kit fits lenses up to 5.1 inches (12.9 cm) long and up to 3.3 inches (8.4 cm) in diameter, such as the Canon EF 17-40mm f/4L or Nikon AF-S 18-70mm f/3.5-4.5. If you substitute a Modular Glass Flat Front for the dome, the lens length capacity changes to up to 5 inches (12.7 cm) for compact macro lenses.

    Will this dome work with an Ikelite Dry Lock (DL) port housing?

    No. The Modular 8-inch Dome in this kit is built for Ikelite's FL and DLM port systems and also fits older two-lock mount housings, but it is not compatible with the newer Dry Lock (DL) port system. Confirm your housing's port mount type before ordering.

    Can I use the Lens Extension from this kit with a different dome or flat front?

    Yes. The FL Lens Extension threads onto the base of the Modular 8-inch Dome, and a Modular Glass Flat Front can be substituted in place of the dome to pair the same extension with compact macro lenses. Additional Lens Extensions of other lengths are also sold separately for use with this dome.

    What exactly comes in the Ikelite 5511.5 kit box?

    The kit includes the Modular 8" Dome (#5510.45) with its dome shade, neoprene front cover, and silicone lubricant, plus the FL Extension for Lenses Up To 5.1 Inches (#5510.28) with its O-rings and silicone lubricant tube, along with an instruction manual and a port chart.