CUSIP No. 885160101 Page 1 of 1 Pages

EXHIBIT D

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13D with respect to the Common Shares, par value $0.10 per share, of Thor Industries, Inc., dated as of June 22, 2012, is, and any amendments thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.

Date: June 22, 2012	ESTATE OF WADE F. B. THOMPSON
	/s/ Angela E. Thompson Name: Angela E. Thompson
	Title: Co-Executor
	/s/ Alan Siegel Name: Alan Siegel
	Title: Co-Executor
Date: June 22, 2012	TRUST FUND UNDER ARTICLE THIRD OF THE WADE F. B. THOMPSON REVOCABLE TRUST
	/s/ Alan Siegel Name: Alan Siegel
	Title: Trustee
Date: June 22, 2012	THE THOMPSON FAMILY FOUNDATION, INC.
	/s/ Alan Siegel Name: Alan Siegel
	Title: Officer and Director
Date: June 22, 2012	ANGELA E. THOMPSON /s/ Angela E. Thompson
Date: June 22, 2012	ALAN SIEGEL /s/ Alan Siegel