Size stated

Ionly purchased this product because is clearly states 10 Pack 6 mil Blank Stencil Making Sheets 12 x 12 inch Compatible Cricut & Silhouette Machine (Mylar Material). The amount and product is correct, but as before with last company, the stated 12 x 12 Inch size is only 11 3/4 x 11 3/4 which will not work when i am making 4 stencils per 12 x 12 sheet at 5.75 each

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