Woodhaven Calls THP Box Call Maple/Walnut. The THP Box has become a favorite among the THP crew and is soon to be a favorite among turkey hunters nationwide. Specifications for Woodhaven Calls THP Box Call: Manufacturer: Woodhaven Calls Color: Maple/Walnut Fabric/Material: Wood Call Type: Box Call Package Contents: Woodhaven Calls THP Box Call Woodhaven Calls WH245: THP Box Call Maple/Walnut