When Strength, Durability & Water Resistance Matter Most.
The Commercial Grade Series
Bomar Commercial Grade Series Hatches are rugged, watertight and mean business when it comes to commercial boating. Bomar’s Flush Watertight Series Hatches are commercial grade, built to last out of durable Almag-35 cast aluminum, with stainless steel hardware and t-handle. For nearly three decades Bomar, a division of Pompanette, LLC, has designed and manufactured the finest ports, hatches, windows, and doors for the marine industry. Since the beginning, the Bomar name has been synonymous with innovative design, flawless craftsmanship, and the highest quality materials. You will find that the Commercial Grade Series Watertight Deck Hatches live up to the respected Bomar name.
Commercial Grade Series
Standard Features
The Commercial Series cast watertight hatches by Bomar, featuring:
Download Product Sheet
Download Product Sheet
- Heavy Duty 535 Magnesium Hardened Aluminum
- Lightweight Combined with Strength & Durability
- Natural Brushed Finish
- Built & Tested for Harsh Marine Environments
- Tested to be Watertight, Submerged to 30 FT (10M) Head Pressure Testing
- Ergonomic Design Provides Under-Deck Space Savings
- Allows for 180+ Degrees of Opening Angle
- 316L for Rust & Corrosion Resistance
- Provides Robust Dogging Action
- 20-30% Lighter Than Competitors
- Without Sacrificing Strength & Durability
- Interior & Exterior Escape Handle comes Standard
Commercial Grade Series
Additional Options
Commercial Grade Series personalization options, for any application.
- 12″ to 43″ to Accomodate Ship Builders & Architects
- Available in Square, Rectangle, Oval and Round Form Factors
- Custom Powdercoating
- CE Approvals
- Bomar Spare Parts & Installation Accessories Readily Available
Commercial Grade Series
Key Materials
Quality construction, built to last at sea.
- Bomar uses 535 magnesium hardened aluminum to construct our Commercial Grade Series watertight hatches. The raw almag-35 is heated to 1100 degrees F at the Bomar foundry and is then melted and poured into our proprietary cast molds.
- The Commercial Grade Series watertight hatches are professionally assembled in-house with 316L, marine grade, stainless steel T-handle & fasteners. Stainless steel is ideal for harsh marine environments due to it’s rust & corrosion resistance, strength and luster.
Bomar Commercial Grade Series
Deck Hatch Size Chart
Non-Hinged
| Part # | Hatch Opening | Hole Cut Out | O.D. of Deck Flange | Extends Below Deck | Shape | Weight (lbs) | PDF Drawing |
|---|---|---|---|---|---|---|---|
| 412 | 12″ (305 mm) | 14 7⁄8″ (380 mm) | 18 1⁄2″ (470 mm) | 4″ (102 mm) | Circle | 20 | DOWNLOAD |
| 415 | 15″ (380 mm) | 18″ (455 mm) | 21 1⁄2″ (545 mm) | 7-1⁄4″ (185 mm) | Circle | 23 | DOWNLOAD |
| 418 | 18″ (455 mm) | 21″ (535 mm) | 24 1⁄2″ (622 mm) | 7-1⁄4″ (185 mm) | Circle | 28 | DOWNLOAD |
| 420 | 20″ (508 mm) | 23″ (585 mm) | 26 1⁄2″ (675 mm) | 7-1⁄4″ (185 mm) | Circle | 32 | DOWNLOAD |
| 424 | 24″ (610 mm) | 27″ (685 mm) | 30 1⁄2″ (770 mm) | 7-1⁄4″ (185 mm) | Circle | 40 | DOWNLOAD |
| 41218 | 12 3⁄16″ x 18 1⁄4″ (310 mm x 464 mm) | 14 15⁄16″ x 21″ (380 mm x 534 mm) | 18 11⁄16″ x 24 3⁄4″ (475 mm x 629 mm) | 5-5⁄8″ (143 mm) | Oval | 27 | DOWNLOAD |
| 41524 | 15″ x 24″ (380 mm x 610 mm) | 17 3⁄4″ x 26 3⁄4″ (450 mm x 680 mm) | 21 3⁄4″ x 30 1⁄2″ (552 mm x 774 mm) | 5″ (127 mm) | Oval | 34 | DOWNLOAD |
| 42424 | 24″ x 24″ (610 mm x 610 mm) | 27″ x 27″ (685 mm x 685 mm) | 31″ x 31″ (787 mm x 787 mm) | 7-1⁄4″ (185 mm) | Square | 45 | DOWNLOAD |
| 43636 | 36 1⁄8″ x 36 1⁄8″ (918 mm x 918 mm) | 39 1⁄8″ x 39 1⁄8″ (994 mm x 994 mm) | 43 1⁄4″ x 43 1⁄4″ (1098 mm x 1098 mm) | 7-1⁄4″ (185 mm) | Square | 90 | DOWNLOAD |
Hinged
| Part # | Hatch Opening | Hole Cut Out | O.D. of Deck Flange | Extends Below Deck | Shape | Weight (lbs) | PDF Drawing |
|---|---|---|---|---|---|---|---|
| 41524-H | 15″ x 24″ (380 mm x 610 mm) | 20 1⁄2″ x 26 3⁄4″ (520 mm x 568 mm) | 23 1⁄2″ x 30 1⁄2″ (597 mm x 774 mm) | 5″ (127 mm) | Oval | 34 | DOWNLOAD |
| 424-H | 24″ (610 mm) | 26 3⁄4″ x 29″ (680 mm x 737 mm) | 30 1⁄2″ x 32″ (775 mm x 813 mm) | 7-1⁄4″ (185 mm) | Circle | 49 | DOWNLOAD |
| 42424-H | 24″ x 24″ (610 mm x 610 mm) | 27″ x 27″ (685 mm x 685 mm) | 31″ x 32 5⁄8″ (787 mm x 829 mm) | 5″ (127 mm) | Square | 52 | DOWNLOAD |
Commercial Grade Series
Frequent Questions
- Bomar is the leading manufacturer of hatches & portlights for enthusiasts and builders since 1947. We truly stand behind our products and pride ourselves on our outstanding customer service. All Bomar hatches are backed by our 1 year warranty against any manufacturing defects.
- Only the individual hatch is included with purchase. Hardware, spare parts & accessories sold separately.
- Hatches are safely and neatly packaged for residential or commercial delivery. For large quantities, delivery to a commercial address is highly recommended.
- Yes, Bomar ships products worldwide across the globe. Shipping charges will be determined and billed separately once your order is ready to ship.
- Bomar offers replacement parts such as gaskets, dogs, handles, lenses & more for most hatches produced after 1999.
- Explore Spare Parts
- Customers may purchase these replacement items from an authorized dealer. Hatch lifespan will vary case by case depending on environment, use, and individual care.
Commercial Grade Series
Purchase Options
Purchase Commercial Grade Series watertight cast hatches by Bomar.
Find A Dealer
Find A Dealer
Bomar, a division of Pompanette, LLC continues trustfully serving the worldwide marine community since 1947. We offer a variety of safe, secure, private and convenient purchasing options for OEM’s, dealers, distributors & end-users.