Mantel Specifications
A =  Length of shelf (Longest Dimension) - Fig.6
A-1= Length of shelf (Shortest Dimension) - Fig.6
B = Depth of shelf (Largest Dimension) - Fig.6
B-1 = Depth of shelf (Shortest Dimension) -Fig.6
C = Back width of base - Fig.6
C-1 = Front width of base - Fig.6
D = Height - Fig.5
E =  Mantel opening width at base - Fig.5 and Fig.7
E-1 = Mantel opening width at base - Fig.7
F = Mantel opening height (Highest Dimension) Fig.5
F-1 = Mantel opening height (Lowest Dimension) Fig.5
G = Projection for surround (Inside Dimension) - Fig.6
H = Projection to corner block (Inside Dimension) - Fig.6

A =  84"
A-1= 77"
B = 16 1/2"
B-1 = 11 1/2"
C = 74"
C-1 = 74"
D = 55"
E = 49" 
E-1 = 49"
F = 36"
F-1 = 36"
G = 4 1/2"
H = 4 1/2"