“ 1” solid aluminum or steel framework with a ½” or 1” poly cover. Radius and straight sections are available. Stronger than a standalone poly threshold, will not warp.

•  1″ x 7″ x 120″ straight
•  1″ x 7″ x 120″, 20′ radius
•  1″ x 7″ 120″, 28′ radius

Poly cover and framework can also be sold separately.