Hazel wood contains natural acids, tannins and resins. Those substances guarantee an excellent natural protective barrier against changing weather conditions for many years, thus slowing the aging process of wood. NATURAL PRODUCT The product is completely natural, does not contain chemical compounds, which makes it safe for people, animals or plants. 7 stand posts: 180 cm x 180 cm; 180 cm x 150 cm; 180 cm x120 cm; 1 80 cm x 90 cm. 4 stand posts: 180 cm x 1 80 cm; 180 cm x 150 cm; 180 cm x 120 cm ; 180 cm x 90 cm; We also make fences in accordance with the ordered special specifications.