Constructed of rugged lightweight polyethylene with bright yellow material that resists fading. Will fit 27", 30" and 32" diameter manholes with an inflatable seal that ensures a watertight seal. Designed with four (4) outrigger support gussets that stabilize the shield and is 12" tall to keep water and mud out of the manhole as you work. Can be used with Condux guardrail.
Inflate seal until manhole shield fits snugly in the manhole ring. Caution: Over inflating will cause the shield to pop out of the ring.