Clematis: seeking advice for obelisks or tuteurs for clematis vines, 1 by docgipe

docgipe wrote:
Treated 4" X 4's, treated 2" X 8" X 8' header, 2" X 3/4" rough cut local lath. This arbor is 8' X 8'.
Clematis are all classed as to how many feet they will climb. The one we planted here last summer is classes 16' to 18' feet. Cost as you see it $150.00 built with free labor and lots of coated screws. If purchased or built by a contractor figure at least $500.00 value.

The shed it is tied into is called board and batt construction. It is common as found in farm buildings built about the turn of the century in North Central Pennsylvania built with rough sawn hemlock. The shed is stained but the untreated lumber will turn gray in a year or two.