Royal R-3500TR Installer's Manual page 9

(327mm)
6 5/8 (168mm)
GAS
LINE
ACCESS
32 1/2
(826mm)
2 1/4
(56mm)
5 3/8
(138mm)
GAS
RATING PLATE/
ACCESS
LABELS
Figure 3. Diagram of the R-3500TR/TRH
25 3/4 (653mm)
12 7/8
DIAMETER
8 3/4 (222mm)
VENT COLLARS
(468mm)
31
(786mm)
36
(913mm)
TOP
HOOD
STANDOFFS
TRIM
DOOR
GAS
CONTROLS
LOWER GRILLE
16 1/4 (413mm)
ELECTRICAL
ACCESS
18 3/8
31
3 1/2
(788mm)
(90mm)
8
(203mm)
8 5/8
(219mm)
DIAMETER
VENT
COLLARS
21
(533mm)
ELECTRICAL
ACCESS
9