We ARE the manufacturer.....  Detroit Muscle Technologies 

Description
R
everse engineered, laser cut, OEM style material for the rear defroster on your 1970 1971 1972 1973 or 1974 E Body Barracuda / Challenger. This same defroster was also used on 1971 to 1974 B Body models Charger Coronet Road Runner. The oval shaped foam goes on the defroster duct under the package tray. The rectangular shaped foam goes under the vent bezel on top of the package tray.

 
Shipping 

USPS First Class Mail. We combine shipping
 
IMPORTANT SHIPPING NOTICE
Shipments outside the US take at least 7-14 days.
Shipments to Canada take at LEAST 14 days and sometimes as long as 30 days.
We ship First Class International Mail for all shipments under 4lbs and under 1 cubic foot. 
We ship International Priority Mail, for shipment over 4lbs or 1 cubic foot.
BOTH methods take the same amount of time.
There are NO tracking numbers shipping outside the US unless you pay additional for UPS or 
International Express Mail.
UPS or International Express Mail have EXPENSIVE brokerage fees of $35+ plus local taxes.