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Internal Hinge Watertight Hatch | Quick Acting | Square 24″ X 24″ | Aluminum

Internal Hinge Watertight Hatch | Quick Acting | Square 24″ X 24″ | Aluminum


    • Opens to 180 degrees-plus
    • Over-center auto stop holds cover securely open at 120 degrees
    • Auto-stop releases quickly with a push-lever
    • Stainless hardware, Delrin slides
    • Works equally well in flush deck or vertical mount positions – perfect for a lazarette hatch-door
    • Thicker Dog Arms for superior strength
    • Positive visual verification: When the handle is down, the hatch is secured
    • Inside escape bar on all units (optional inside turning wheel available)
    • Subtle design improvements make the BFHQ stronger, more watertight than our competitors’ similar units
    • Available in 20” Round, 15” X 24” Oval or 24” x 24” Square
    • Available with aluminum or galvanized steel deck ring


This hatch is ABS Certified for use on ABS classed vessels or facilities by the American Bureau of shipping on ABS Certificate Number: 21-2112059-PDA.
These hatches are secured using the adjustable 4-dog quick-acting style of closure. Cover assembly is cast in high-strength aluminum for light weight. The deck ring is available either in galvanized mild steel (for welding into steel decks), or cast aluminum (for welding into aluminum decks or bolting to fiberglass or wood. Steel deck rings are hot dip galvanized for superior corrosion resistance. The Baier™ hidden Hinge series is available in clear opening dimensions of 20” Round, 15” X 24” Oval or 24” x 24” Square.
Key Features
Currently, the 4-dog BFHQ series hatch cover assemblies are available only in cast aluminum. Deck rings are available in galvanized mild steel or cast aluminum. Stainless Steel deck rings are available by special order.

The new Baier™ Hidden-Hinge, fully-articulated commercial marine flush deck hatch assembly for workboats adds the convenience of a built-in recessed Stainless Steel T-handle to the flush-mounted, quick release, lift-out hatch. The design is especially useful for aluminum boats, crew supply vessels (CSV), fishing vessels and other workboats, as well as many U.S. Navy and U.S. and Canadian Coast Guard vessels. This new hinge assembly works exceeding well when installed vertically like a door — it pivots easily and maintains alignment. An over-center auto stop holds cover securely open at 120 degrees, and the hatch cover slides further open to over 180 degrees.

Installation, Maintenance and Operation Guide
Internal Hinge Round and Square Hatches Installation, Maintenance, and Operation Guide

Optional spoked or un-spoked handwheels are available. Request the handwheel option from a Baier™ sales representative or Baier™ distributor at the time of purchase.

Are you Looking for a coaming to go with this hatch? Please visit our Coamings Section for more information.

Cover Material: cast aluminum only
Ring Material: cast aluminum, or galvanized steel (See PDF download for steel ring design)

BFHHQTH24X24A/A with Cast Aluminum Deck Ring

BFHHQTH24X24A/A with Internal Hinge
Model Number Material – Hatch / Deck Ring Downloads Clear Opening In. (mm) Cover Size Cutout Dimension in. (mm) Weight (Cover) Weight (Deck Ring)
BFHHQTH24X24A/A Aluminum / Aluminum Cutout & CAD Files:
24 x 24 26 x 26 28″ X 31.5″ See Detail
BFHHQTH24X24A/S Aluminum / Steel Cutout & CAD Files:
24 x 24 26 x 26
BFHQTH24X24A Aluminum Cover Only Spare Parts Files:
NA 26 x 26

Disclaimer of Liability: PDF Cutout drawings and Autocad® Cutout drawings (the “Drawings”) are provided for convenience only without warranty of any kind. Baier makes no representation regarding the completeness, accuracy, reliability, timeliness or compatibility of the Drawings or that the Drawings will be error-free. Baier assumes no responsibility or liability for anyone's use of the Drawings, and Baier shall not be liable for any loss or damage of whatever nature (direct, indirect, consequential, or other) whether arising in contract, tort or otherwise, which may arise as a result of anyone’s use of the Drawings.

We are working to complete our library of available drawings for our customers. If the drawing you want does not appear, is too large or otherwise unsuitable for your use, please contact us and we will investigate alternatives for you.

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