True Radius Applications
 

True Radius Casing Flexibility Range

1. Diameters 1'/6" - 3'/0" will expand 4" and contract 2" if the profile is not
larger than 3/4" X 3-1/2" (larger size profiles will restrict flexibility for diameters
within this range).
 
2. Diameters 4'/0"and larger will expand 10" and contract 6" if the molding profile is not larger than 3/4" X 3-1/2" (larger profiles will restrict flexibility for diameters within this range).

 
Pre-forming Limitations

1. Minimum D 4'/0" (24" radius) if the profile is 6" to 8" wide.
 
2. Minimum D 3'/0" (18" radius) if the profile is 5" to 6" wide.
 
3. Minimum D 2'/4" (14" radius) if the profile is 3’/2" to 5" wide
 
4. Minimum D 1'/6" (9" radius) if the profile is 2" to 3’/2" wide
 

 
Special Instructions

1. Provide a molding placement drawing if application is not typical.
 
2. To order true radius casing with straight legs, refer to how to order "Odd Casing" Specials.

 

Half circles:
Diameter" x 2 = MATERIAL LENGTH
Quarter circles:
Radius" x 2 = MATERIAL LENGTH
   
Full circles:
Diameter" x 4 = MATERIAL LENGTH
Arc Eyebrows:
Rise" x 3 + width = MATERIAL LENGTH
   
Round OSR Radius Crowns:
Application (quarter circle, half circle, three-quarter circle, full circle) add two feet 
= MATERIAL LENGTH
Dormer and ISR Radius Crowns:
Diameter" convert to radius application (quarter circle, half circle, full circle) 
= MATERIAL LENGTH
IMPORTANT!! Specify Dormer if it's a dormer application