Sigma Engineered Solutions ProConnex Round Zinc-Plated Steel Knockout Seal Canning Supplies Base Type: Sled Base

Base Type: Sled Base

and optimal airflow

Product Type: Starter

a gun metal finish and coordinating black/graphite blades

leading to fewer dropped screws on the job site

Sigma Engineered Solutions ProConnex Round Zinc-Plated Steel Knockout Seal Canning Supplies Base Type: Sled BaseThe Sigma ProConnex knockout seals are used to close exposed holes in an outlet box or metal enclosure. These knock out seals are of zinc plated steel construction. Brand Name: Sigma Engineered Solutions Sub Brand: ProConnex Shape: Round Material: Zinc Plated Steel Product Type: Knockout Seal Application: Closure of Unused Box Outlets Diameter: 1. 48 in. Height: 0. 34 in. Color: Silver Packaging Type: Polybag UL Listed: No Inner Diameter: 1. 41 in.