19mm width × approx. 34m per roll. I have a bulk lot of industrial double-sided foam tape available in the UK.
12mm or 19mm x 30m ATG Tape PH7-70 Acid Free Conservation Double Sided Adhesive
BlueSpot 19mm x 2M White Double Sided Foam Mounting Tape
Canvas Bars Frame Stretcher Slotted Sold in Pairs 19mm x 35mm Standard & Wedges
