I think the 32, 35, and 38s all use the same size hatch and I replaced the hatches on my 35-3 with Lewmar Ocean series 60 hatches:
Mauripro has a 40% off Lewmar hatches. My rear hatch measures 22+ x 22+ so looking at the specs it would be a size 60. Is it "Medium or Low Profile"? What does the replacement install require...how to remove the old and install the new? Advice? Thanks! Actually it may be the "Ocean Size"...
ericsonyachts.org
You should be able to find the dimensions you need from Lewmar's web site.
I replaced the three hatches on my 1991 E38 in 2014. I used the following Lewmar Ocean Series hatches from Defender. The information was all from them at that time. You are talking about the Size 70 main hatch and Size 60 forward hatch.
Size 20, Flat Base
OA Dimensions: 10-1/2"L x 16-3/16"W x 1-9/16"H
Frame Material: Anodized Aluminum, Lens Color: Smoke Gray
Brand: Lewmar
Model #: 39620050, Price $368.76
Size 60, Flat Base
OA Dimensions: 22-5/8"L x 22-5/8"W x 1-11/16"H
Frame Material: Anodized Aluminum, Lens Color: Smoke Gray
Brand: Lewmar
Model #: 39660050, Price $686.91
Size 70, Flat Base
OA Dimensions: 27-5/16"L x 27-5/16"W x 1-11/16"H
Frame Material: Anodized Aluminum, Lens Color: Smoke Gray
Brand: Lewmar
Model #: 39670050, Price $912.66
Nine years later the hatches still work perfectly and the lenses have essentially no crazing.
Jon