Selkirk 104019 4 in. x 18 in. 28 ga B-Vent Pipe is a HVAC/R product.

In plain language, it is used as part of an HVAC/R system. This item belongs to Vent Pipe And Fittings, so it should be selected by matching the listed model, size, and application to the job requirements. Purpose: Used as part of an HVAC/R system.

Where it is used: Used in HVAC/R installations where this product type and size are required. How it is used: Selected by matching the model, size, rating, and application requirements, then installed by a qualified technician according to manufacturer instructions. Key features: Listed size/rating from title: 4 in., 18 in., 28 ga Dimensions/weight: 4 in., 18 in., 28 ga; weight not specified in the available source data.

Note: Installation requirements and compatibility should be confirmed with manufacturer documentation or a qualified HVAC/R technician.