Standard Curbs GPI GPIP GPIR GPF GPFP GPFR GPFV GPFVP GPFVR GPS GPR × GPFVP A straight-sided, vented roof curb for use on pitched roofs in kitchen applications. 20, 24, 26, or 30 in. height, varies by size 2 or 5 in. flashing flange Purchase Options: REQUEST A QUOTE Configure to Order Need a specific configuration? Submit a request online and get a quote from your local representative within 4 hours. REQUEST QUOTE Show All Catalogs Corporate / All Products Catalog Corporate / All Products Catalog (Spanish Version) Roof Curbs, Extensions, and Equipment Supports Application Information Selection Guide for Fans Other Product Information Performance Coatings Warranty Warranty Statement for Roof Curbs