Home / Parts & Supplies / GE HVAC Accessories & Heat Kits / 18″ HEIGHT FULL PERIMETER CURB GE 21J20 ROOF CURB GE · MODEL 21J2018″ HEIGHT FULL PERIMETER CURB Specifications Additional information Brand GE Related products GE · NS16A48SA5GE 4-Ton 16 SEER2 Single-Stage Air Conditioner4 Ton · 16 SEER2 · Single-Stage · R454BInstallation InstructionsQuick SpecsWarrantyPickup · Delivery Pricing & stockSign in GE · NAM30V1TA5SGE 2.5-Ton 1-Piece VS Air Handler2.5 Ton · R454BInstallation InstructionsQuick SpecsWarrantyPickup · Delivery Pricing & stockSign in GE · NS16H18SA5GE 1.5-Ton 16 SEER2 Single-Stage Heat Pump1.5 Ton · 16 SEER2 · Single-Stage · R454BInstallation InstructionsQuick SpecsWarrantyPickup · Delivery Pricing & stockSign in GE · NAM24V1TA5SGE 2-Ton 1-Piece VS Air Handler2 Ton · R454BInstallation InstructionsQuick SpecsWarrantyPickup · Delivery Pricing & stockSign in