Detailed side panels with four posts. Maintenance free. Resist to rotting, cracking, yellowing or fading. Warranty: 20 years. Made from premium weather-resistant vinyl. White color. Post: 5 in. L x 5 in. W. Overall: 85 in. L x 43.8 in. W x 87 in. H. Assembly Instructions. A grandly imposing entrance to your yard, the Devonshire arbor is our most substantial offering. Combining a classic look with the latest in manufacturing technology, the Devonshire is an impressive arbor sure to be marveled over. Now you can tend to your gardens and your yard, because your arbor will never need to be painted, stained or maintained. The Devonshire arbor combines modern appeal with a classic look that will give you a lifetime of enjoyment. Never stain, paint, or maintain your arbor again! Just the occasional rinse with a garden hose is all you need to do to keep your arbor looking great year after year.