OL130 Dartmoor National Park - Poster Print. Established in 1951, Dartmoor sits in South Devon. Dartmoor National Park - Poster print is available unframed, or framed in a 4cm black or white wooden frame with a plexiglass cover. Unframed Dimensions: A4 - 210mm x 297mm A3- 297mm x 420mm A2 - 420mm x 594mm Framed Dimensions: A4 - 280mm x 365mm A3 - 365mm x 490mm A2 - 490mm x 665mm Printed on a smooth 250gsm silk NB - where a border is visible, please note that this is part of the overall design of the print and not a separate mount.