paper faced cove gypsum cornice made of gypsum power and fiberglass smooth surface,clear beautiful pattern paper faced cove gypsum plaster ... Cornice 1) Material: top quality gypsum powder, fiberglass 2) Finish: Smooth surface, clear beautiful pattern 3) Performance: Fireproof, worm resistant, moisture proof ... patching, convenient in construction, used for ceiling decoration cove cornice 3.6m