BEST Hardboard Corners

Keep your stretcher frames square!

These are a simple but worthwhile accessory to protect paintings. These corners are an exact 90° angle. The predrilled holes make mounting easy. To ensure that canvas corners will remain square, just nail one hardboard panel to each of the four corners of the canvas. Available in 8" and 12" sizes, each in packs of 4 or 4 sets of 4. Suitable for use with Heavy-duty, Medium-duty and Light-duty Stretcher Bars as well as Aluminum Pro Bars. Order Hardboard Corners appropriate for frame size.