The APU9 model fits holes from 5" x 6" up to 8" x 8". The access door is 8" x 8" with overall outer panel frame dimensions of 10" x 10". Series APU SpringFit Access Panel, a convenient & attractive means to hide unsightly wires, cables & pumps while maintaining their accessibility. Installs faster & easier as no cutting is required, and the integrity of a wall remains intact. Plain white faceplate that can be wallpapered or painted to match a rooms dŽcor. Fits into odd shaped holes. A template is provided if cutting is necessary. Made of sturdy polystyrene.