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Amazon.com : 500 Guardian Blank Card Sleeves – Use as Credit Card Sleeves or Hotel Key Card Envelopes – Writeable & Printable Gift Card Holder Sleeves : Office Products
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Hotel Key Card Holder/Sleeve/Envelopes/Cover (Box of 1000 Envelopes) Fits up to 4 RFID or Magnetic Stripe Hotel Key Cards. Envelope Size 3.55 inch Height * 2.37 inch Width. : Amazon.ca: Office Products
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500 Guardian Blank Card Sleeves – Use as Credit Card Sleeves or Hotel Key Card Envelopes – Writeable & Printable Gift Card Holder Sleeves : Amazon.ca: Office Products
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custom printing hotel key card envelope thick paper card holder to welcome guests fit for standard room card - AliExpress
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Hotel Key Card Cover Envelope Sleeve Holder ( Pack of 1000 key card sleeve in a box ) fits up to 4 standard hotel rfid and magnetic key cards : Amazon.ca: Office Products
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My hotel room requires that you insert your keycard once you enter to have power, as a way to reduce waste (& expense) : r/mildlyinteresting
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