Ventilation ducts dimensions: circular section -d150mm d250mm 400mm; rectangular – 100x200mm 200x200mm 200x350mm 350x350mm 350x600mm 600x600mm. In total more than 250 items: a variety of twists and turns adapters diffusers. All elements can be assembled into a single chain providing huge scope for creativity. Each item has a logical name all on separate layer “Ventilation” All objects are made by multi / sub-object material where: 1- (pipe) material core tube 2- (diffuser) material diffusers 3- (Fixture) 4- fastening material (Fixture (bolts)) material of bolts and nuts 5- (grid_diffuser) mesh material 6- (grid_in_pipe) arrays embedded in the material tube This makes it easy to change the material and apply it directly to all the necessary elements. The model material 4: -truby d150 – Paint white -truby d250 – Paint dark gray -truby d400 – steel -koroba – galvanized iron grid material 5 (grid_diffuser) made texture that allows to change the pattern on your discretion placing a suitable texture slot “opacity” Present two flutes models they used the modifier “PathDeform” which allows to bend the corrugation on the spline draw the appropriate spline and enter it in the inoculant. Elements easily snap on’s pivot points but when joining parts of different size groups the initial element of better tying the axes or manually. Model easily converted into corona. Good luck) / Size round -d150mm d250mm 400mm!; size rectangle – 100x200mm 200x200mm 200x350mm 350x350mm 350x600mm 600x600mm. More than 250 elements