R4500, R4502,R4503 From the back , From the front

Model
Height
Width
Depth
R4500
28 3/8in 721 mm
20 1/4in 514 mm
21 in 533 mm
R4502
28 3/8in 721mm
20 1/4in 514mm
21in 533mm
R4503 TOP
28 3/8in 721mm
20 1/4in 514mm
Angle from 20in 508mm to 27in 686mm
R4503 MIDDLE
10in 254mm
20 1/4in 514mm
20in 508mm
R4503 BOTTOM
8in 203mm
20 1/4in 514mm
13in 330mm

The R4503 is designed to fit the curve of the hull.

The door is an additional 3in, 76mm from the back of the frame.