Common glazing materials for 20x24 frames include acrylic (sometimes called plexiglass) and styrene. Listings may use different trade or descriptive terms, but these are the typical options.
Without a mat, many 20x24 frames accommodate a full 20x24 image. With a mat installed, they commonly display a 16x20 image—the mat opening narrows the visible area to that smaller size.
Most 20x24 frames support both horizontal and vertical hanging and include mounting hardware. Common mounting options shown are sawtooth hangers and hanging wire.
Outer dimensions vary by frame style and moulding width. Example listings show outer lengths of roughly 24–27 inches and widths of roughly 20–23 inches; the exact outer size depends on the frame profile.
Backings include acid-free foam board, sturdy backboards, and natural corrugate, depending on the frame model.
Frames use simple access methods such as bendable tabs or easy-to-open turn buttons/turn points, allowing you to remove and replace the artwork quickly.