ADAPTER Curb adapters adjust the standard fan curb cap dimensions to match a non-standard or existing roof curb size. Up to 20 in. larger Up to 10 in. smaller Kitchen Roof Curbs ADAPTER GESR GESS GPE GPEX GPF GPFP GPFR GPFV GPFVP GPFVR GPI GPIP GPIR GPR GPS ISB VCE × 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 IN-STOCK PRODUCTS Free Shipping Order now and we’ll ship within one business day. All products include free ground shipping. SHOP ONLINE