Ruck 20 inch Flat Protection Grille. Galvanized Steel, IP44

A Flat Protection Grille Sized for 20 Inch Duct This is the largest flat grille in the Ruck range, sized for a 20 in duct. Galvanized steel sheet keeps it corrosion-resistant in humid exhaust air, and the IP44 rating covers dust and splashing water. The flat pressing means it does not project into a walkway. Where This Duct Guard Belongs in the Run At the exposed end of a 20 in run this is the only thing between the impeller and the weather. Fit it on the termination and leave it. It excludes pests and coarse debris. It does not filter, and you would not want it to at this bore. Inspect it after storms, since a face full of leaves is a genuine restriction on a duct this size. Fitting is a straight push onto a matching Ruck collar. It is a mechanical guard, not part of the sealed path, and it is not trying to be airtight. Key Features Galvanized Steel Sheet: Resists corrosion in humid exhaust air and outdoor terminations. IP44 Rated: Rated against dust ingress and splashing water at the duct mouth. Low-Profile Flat Pressing: Sits close to the collar, so nothing projects into a walkway. 20 in Duct Fit: Matches Ruck 20 in collars and standard 20 in ducting. 0.2 lbs: Light enough that it changes nothing about how the duct is supported. Pest and Debris Exclusion: Stops insects, birds and leaf litter entering an idle duct. Technical Specifications Specification Value Duct Size 20 in Material Galvanized steel sheet Profile Flat Protection Rating IP44 Weight 0.2 lbs Function Debris and pest exclusion