FREE GoalZero Stickers
Fill out the quick form and they will send a FREE sticker out to you.
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Verified active: December 10, 2016 Sample availability and delivery is subject to each individual company's terms, conditions and availability at their discretion.
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Fine Print You Shouldn’t Skip
Valid only on app, website, or in-Shack kiosk orders
Not valid at drive-thru or on third-party delivery apps
$10 minimum purchase required before the free burger; fees and taxes excluded
Limit one free burger per order
Offer available at participating U.S. locations only; airports, stadiums, and select venues excluded
Offer runs through May 31
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