23.9″ x 9.5″ Access Hatch. Color: White. Material: ABS Anti-aging, Anti-untraviolet. External Dimensions: 23.9″ x 9.5″ (607mm x 243mm). Opening Dimensions: 20.7” x 6.6″ (525mm x 168mm). ABS Anti-aging, Anti-ultraviolet. Easy “click-in”construction. Corrosion free synthetic fittings and durable rubber seals. 180° opening hatches .