RabbetSpace®
Emergency Rabbet Depth Extension Strips - Secures the art and finish off the back of the frame quickly, easily, and neatly.

Helpful Hints

To determine which size Rabbetspace you need, fill the frame with the entire glass-art-backing package and either measure as shown at left or try small pieces of Rabbetspace.

You may have to use a deeper Rabbetspace and fill with a piece(s) of mat to get a proper fit. Remember that any pressure on the backing will likely make the art and mats buckle as they expand with changes in humidity. Rattling beats buckling.

Rabbetspace can be cut on a chopper, chop saw, mitre box, and some fillet cutters. Xacto® makes a small hobby mitre box including a fine tooth saw for about $15 that works great.