The ridge 9.5 m high and 20.00 m wide wide-span tunnel was built near the town of Dąbrowa Białostocka. It is the tallest facility of this width included in the Agro-Sur portfolio. The facility with an area of 1000 m2 has been equipped with a system of shade/thermal curtains, a clima 16 climate controller and an arm sprinkler. One-sided, automatic top ventilation ensures optimal rotation of the air inside the building. Additionally, the tunnel was equipped with a side ventilation system made of double inflated film. It is being lowered by means of a gear motor, which ensures the comfort of use. An external windscreen was also installed on the side walls of the tunnel. The facility was equipped with two aluminium double doors covered with polycarbonate. The cover is a double inflated specialist garden film.