Any size for "A" and "B" available, if R-1 1/4 " (32mm) remain unchanged.
Luxury Inside/Outside Opening Hatch
PART # SIZE CUTOUT SIZE OVER ALL ACRYLIC WEIGHT
A B C D THICKNESS LBS
LDH-30-O 14-1/2x19-1/2 14-1/2 19-1/2 17 22 1/2 16.76
LDH-40-O 16-1/2x16-1/2 16-1/2 16-1/2 19 19 1/2 15.87
LDH-50-O 19 1/2x19-1/2  19-1/2 19-1/2 22 22 1/2 21.61
LDH-60-O 24x24 24 24 26-1/2 26-1/2 1/2 27.34
LDH-70-O 31x31 31 31 33-1/2 33-1/2 1/2 43.21