Heavy Duty Rectangular Opening Portholes
from Man Ship Marine
 
TLS
Qty Heavy Duty Bolt-on Porthole without Storm Cover
  Heavy Duty Bolt-on Porthole with Storm Cover
Model Cutout Overall Width Glass Thickness
10" X 20" 10" X 20" 13-5/16" X 23-5/16" 3/8"
10" X 24" 10" X 24" 13-5/16" X 27-5/16" 3/8"
12" X 24" 12" X 24" 15-5/16" X 27-5/16" 3/8"
12" X 28" 12" X 28" 15-5/16" X 31-5/16" 3/8"
Without Cover With Cover