While not always in stock at every location, you can often find thin PVC sheets in the signage or building materials sections.
& Lowe’s : Look for "expanded PVC" or "PVC trim board." Note: These are often located near the siding or molding aisles rather than the lumber section. where to buy pvc foam board
: Excellent for quick shipping on standard hobby sizes (typically 1mm to 10mm thickness). Popular for model making and small signs. While not always in stock at every location,