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Lewmar Flush Hatch Specifications

Flush Hatch:

Lewmar pioneered the high volume flush hatch platform back in 2006, bringing what was then superyacht studying into mainstream boat production. The precision of the fit makes for a sleek, modern look and means no more stubbed toes for boat owners.

  • Clean aesthetics
  • Trim kit fits all standard sizes
  • EPDM seal provides watertight structure
  • Dark grey acrylic options keeps cabin cooler
  • Water drained effortlessly away by deck-molded channels
  • Strong, stylish handles and hinges.

Sizing Chart:

Part No. Grey Acrylic Part No. Dark Grey Acrylic Size Overall Dimensions Cut-out Dimensions Acrylic Window Thickness Weight
W LOWER FRAME FLANGE W HINGE GAP X WIDTH Y LENGTH Z DEPTH R RADII X1 WIDTH Y1 LENGTH R1 RADII
mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in kg lb
39910012 39910812 10 15 9/16 11 11/64 3 30 13 330 13 31 1 1/4 10 3/8 260 10 1/4 260 10 1/4 42.5 1 11/16 12 1/2 2.3 5
39920012 39920812 20 15 9/16 11 11/64 417 16 7/16 272 10 11/16 31 1 1/4 10 3/8 347 13 11/16 202 7 15/16 42.5 1 11/16 12 1/2 2.4 5.2
39930012 39930812 30 15 9/16 11 11/64 527 20 3/4 397 15 5/8 31 1 1/4 10 3/8 457 18 327 12 7/8 42.5 1 11/16 12 1/2 4.7 10.3
39941012 39941812 41 15 9/16 11 11/64 491 19 5/16 246 9 1/16 31 1 1/4 10 3/8 421 16 9/16 176 6 15/16 42.5 1 11/16 12 1/2 2.6 5.8
39944012 39944812 44 15 9/16 11 11/64 512 20 3/16 512 20 3/16 31 1 1/4 10 3/8 442 17 3/8 442 17 3/8 42.5 1 11/16 12 1/2 5.4 12
39954012 39954812 54 15 9/16 11 11/64 577 22 11/16 462 18 3/16 31 1 1/4 10 3/8 507 19 15/16 392 15 7/16 42.5 1 11/16 12 1/2 5.5 12.1
39960012 39960812 60 15 9/16 11 11/64 577 22 11/16 577 22 11/16 31 1 1/4 10 3/8 507 19 15/16 507 19 15/16 42.5 1 11/16 12 9/16 7.1 16
39970012 39970812 70 15 9/16 11 11/64 697 27 1/2 697 27 1/2 31 1 1/4 10 3/8 627 24 11/16 627 24 11/16 42.5 1 11/16 12 9/16 11 24

Low Profile Hatch

Best mid range hatch in the business.

The Low Profile Hatch has soft styling and sleek looks, ideal for use on a powerboat. Smaller ventilation hatches are suitable for any deck location on sailboats, while the larger sizes can be used as a foredeck hatches on smaller to midsize yachts.

  • Outside handles allow the hatch to be opened from on deck if it is not locked
  • Low profile hatches open up to 180 degrees (round hatches open to 170 degrees)
  • Friction levers hold the lid open in any position up to 95 degrees
  • Anodized aluminum frame for corrosion resistance
  • Curved upper frame profile for strength as well as modern styling
  • Available in Round and D-Hatch configuration

Sizing Chart:

Part No. Grey Acrylic Part No. Dark Grey Acrylic Size W LOWER FRAME FLANGE X LENGTH X WIDTH Z HEIGHT R RADII X1 LENGTH Y1 WIDTH R1 RADII HATCH WIGHT Acrylic Window Thickness
mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in
39900030 0 15 9/16 281 11 1/16 281 1 11/16 25 1 72.5 2 7/8 211 8 5/16 211 8 15/16 42.5 1 11/16 1.6 3.5 8 5/16
39903030 3 15 9/16 246 9 11/16 301 11 7/8 25 1 72.5 2 7/8 176 6 15/16 231 9 1/8 42.5 1 11/16 1.6 3.5 8 5/16
39910030 399100303 10 15 9/16 330 13 330 13 25 1 72.5 2 7/8 260 10 1/4 260 10 1/4 42.5 1 11/16 2.2 4.9 8 5/16
39920030 20 15 9/16 272 10 11/16 417 16 7/16 25 1 72.5 2 7/8 202 7 15/16 347 13 11/16 42.5 1 11/16 2.3 5.1 8 5/16
39930030 399300303 30 15 9/16 397 15 5/8 527 20 3/4 25 1 72.5 2 7/8 327 12 7/8 457 18 42.5 1 11/16 4.2 9.3 8 5/16
39940030 399400303 40 15 9/16 491 19 5/16 491 19 5/16 25 1 72.5 2 7/8 421 16 9/16 421 16 9/16 42.5 1 11/16 4.6 10.1 8 5/16
39941030 41 15 9/16 246 9 11/16 491 20 3/16 25 1 72.5 2 7/8 176 6 15/16 421 16 9/16 42.5 1 11/16 2.5 5.5 8 5/16
39944030 399440303 44 15 9/16 512 20 3/16 512 22 11/16 25 1 72.5 2 7/8 442 17 3/8 442 17 3/8 42.5 1 11/16 4.8 10.6 8 5/16
39950030 399500303 50 15 9/16 447 17 5/8 577 22 11/16 25 1 72.5 2 7/8 377 14 13/16 507 19 15/16 42.5 1 11/16 4.8 10.6 8 5/16
39954030 399540303 54 15 9/16 462 18 3/16 577 22 11/16 25 1 72.5 2 7/8 392 15 7/16 507 19 15/16 42.5 1 11/16 4.9 10.6 8 5/16
39960030 399600303 60 15 9/16 577 22 11/16 577 22 11/16 25 1 72.5 2 7/8 507 19 15/16 507 19 15/16 42.5 1 11/16 6.4 14.1 10 3/8
39965030 65 15 9/16 560 22 11/16 560 min 22 11/16 25 1 72.5 2 7/8 See Drawing Above 42.5 1 11/16 6.5 14.3 10 3/8
9/16 675 max 26 9/16

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