3M makes a whole lot of most everything, including their double-sided acrylic tape 9448A-4-11. This particular part number is a 3M-TC part, meaning this product has been cut down from an existing 3M number. Therein lies the rub - we’ve had a few questions lately requesting what the dimensions of the product are, whether “4x11” in the description is in centimeters, inches, feet, or some combination thereof.
This is clarified in the product’s Attributes table - both the length and width are in inches. 4” width by 11” length.