Please provide all measurements below:

Mantel Measurements
A - Mantel width
B - Mantel height from hearth / base
C - Mantel depth

Hearth Measurements
D - Mantel hearth / base width
E - Mantel hearth / base height
F - Mantel hearth / base depth

Firebox opening measurements
G - Mantel opening height
H - Mantel opening width