Catalogue Lewmar - Hatch and Portlight Fitting Guide
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Hatch & Portlight Specifications & Dimensions
Overall Size
Cut-Out Size Dimensions
The specification
change if Trimkits are used
charts below provide cut out dimensions for standard Medium & Low Profile Hatches and Portlights.
Hatch Dimensions
KYI
Cut-Out
KRI
Cut-Out
Lower Frame
Part No
Size
Length
Width
Height
Radii
Cut-Out
Low Profile H
Flange mm in
atch
mm in
mm in
mm in
mm in
Length mm in
Width mm in
Radii mm in
39900030 00
15 9/i6
281 1 11/16
281 1 11/16
25 1
77.5 3 1/16
211 8 5/i6
211 8 5/16
42.5 1 11/16
39903030 03
15 9/i6
246 9 11/16
301 11 7/8
25 1
77.5 3 1/16
176 6 15/16
231 9 1/8
42.5 1 11/16
39910030 10
15 9/16
330 12
330 12
25 1
77.5 3 1/16
260 10 1/4
260 10 1/4
42.5 1 11/16
39920030 20
15 9/16
272 10 11/16
417 16 7/16
25 1
77.5 3 1/16
202 7 15/16
347 13 11/16
42.5 1 11/16
39930030 30
15 9/16
397 15 5/8
527 20 3/4
25 1
77.5 3 1/16
327 12 7/8
457 18
42.5 1 11/16
39940030 40
15 9/16
491 19 5/16
491 19 5/16
25 1
77.5 3 1/16
421 16 9/16
421 16 9/16
42.5 1 11/16
39941030* 41
15 9/16
246 9 11/16
491 19 5/16
25 1
77.5 3 1/16
176 6 15/16
421 16 9/16
42.5 1 11/16
39944030 44
15 9/16
512 20 3/16
512 20 3/16
25 1
77.5 3 1/16
442 17 3/8
442 17 3/8
42.5 1 11/16
39950030 50
15 9/16
447 17 5/8
577 22 11/16
25 1
77.5 3 1/16
377 14 13/16
507 19 15/16
42.5 1 11/16
39954030 54
15 9/16
462 18 3/16
577 22 11/16
25 1
77.5 3 1/16
392 15 7/16
507 19 15/16
42.5 1 11/16
39960030 60
15 9/16
577 22 11/16
577 22 11/16
25 1
77.5 3 1/16
507 19 15/16
507 19 15/16
42.5 1 11/16
39965030* 65
15 9/16
560 22 1/16
675+ 26 9/16+ 560++ 22 1/16+
25 1
77.5 3 1/16
See Drawing Above
42.5 1 11/16
• Hatches should be fitted to a flat surface with a maximum tolerance of ± 1mm. • Fastening size at the hinge section use M6 (1/4'') bolts. • Fastening size for lower frame section use 5mm CSK screw No. 10 UNC 2BA. • Backing plate part number 360061909 (M6) or 360062909 (1/4''). *Part No's marked with a * are made to order. * Maximum Width. Minimum Width.
Medium Profile Hatch
39930020 30
15 9/16
397 15 5/8
527 20 3/4
32 1 1/4
78 3 1/16
327 12 7/8
457 18
42.5 1 11/16
39940020 40
15 9/16
492 19 3/8
492 9 3/8
32 1 1/4
78 3 1/16
421 16 9/16
421 16 9/16
42.5 1 11/16
39944020 44
15 9/16
513 20 3/16
513 20 3/16
32 1 1/4
78 3 1/16
442 17 3/8
442 17 3/8
42.5 1 11/16
39950020 50
15 9/16
448 17 5/8
578 22 3/4
32 1 1/4
78 3 1/16
377 14 13/16
507 19 15/16
42.5 1 11/16
39954020 54
15 9/16
463 18 1/4
578 22 3/4
32 1 1/4
78 3 1/16
392 15 7/16
507 19 15/16
42.5 1 11/16
39960020 60
15 9/16
578 22 3/4
578 22 3/4
32 1 1/4
78 3 1/16
507 19 15/16
507 19 15/16
42.5 1 11/16
39970020 70
15 9/16
698 27 1/2
698 27 1/2
32 1 1/4
78 3 1/16
627 24 11/16
627 24 11/16
42.5 1 11/16
39977020* 77
15 9/16
770 30 5/16
770 30 5/16
32 1 1/4
78 3 1/16
699 27 1/2
699 27 1/2
42.5 1 11/16
Ocean Hatch
39600050* 0 39600070*
Flat Base 25 1
275 1013/16
275 1013/16
39.5 19/16
69 211/16
201 715/16 206 81/8
201 715/16 206 81/8
34 15/16
36.5 17/16
39610050 39610070
Flat Base
25 1
324 123/4
324 123/4
39.5 19/16
75 215/16
255 101/16 260 101/4
255 101/16 260 101/4
40 19/16 42.5 111/16
39620050 20 39620070
Flat Base
25 1
266 101/2
411 163/16
39.5 19/16
69 211/16
197 73/4 202 715/16
342 137/16 347 1311/16
34 15/16 36.5 17/16
39630050 30 39630070
Flat Base
25 1
391 153/8
521 201/2
39.5 19/16
75 215/16
322 1211/16 327 127/8
452 1713/16 457 18
40 19/16 42.5 111/16
39640050 40 39640070
Flat Base
25 1
485 191/8
485 191/8
39.5 19/16
75 215/16
416 163/8 421 169/16
416 163/8 421 169/16
40 19/16 42.5 111/16
39644050 44 39644070
Flat Base 25 1
509 201/16
509 201/16
43 111/16
76 3
437 173/16 44 2 1 73/8
437 173/16 442 173/8
40 19/16 42.5 111/16
39650050 50 39650070
Flat Base
25 1
444 171/2
574 225/8
43 111/16
76 3
372 145/8 377 1413/16
502 193/4 507 1915/16
40 19/16 42.5 111/16
39654050 54 39654070
Flat Base
25 1
459 181/16
574 225/8
43 111/16
76 3
387 151/4 392 157/8
502 193/4 507 1915/16
40 19/16 42.5 111/16
39660050 60 39660070
Flat Base
25 1
574 225/8
574 225/8
43 111/16
76 3
502 193/4 507 1915/16
502 193/4 507 1915/16
40 19/16 42.5 111/16
39670050 70 39670070
Flat Base
25 1
694 275/16
694 275/16
43 111/16
76 3
622 241/2 627 2411/16
622 241/2 627 2411/16
40 19/16 42.5 111/16
39677050 77 39677070
Flat Base
25 1
767 303/16
767 303/16
43 111/16
76 3
694 275/16 699 271/2
694 275/16 699 271/2
40 19/16 42.5 111/16
Using a Compass to Radius a Corner
Keeping compass setting constant
After setting do not adjust
5
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