Amazon.com: 25 Feet NEMA L14-30P/L14-30R Generator Extension Cords, 4 Prong Heavy Duty, 30 Amp,125/250V,Up to 7500W 10AWG Cable and The Cable UL Certification,Yellow : Patio, Lawn & Garden
Champion Power Equipment 25 ft. NEMA L14-30P to L14-30R Generator Cord in Yellow 100395 - The Home Depot
parkworld 50 ft. 10/4 125-Volt/250-Volt 30 Amp 4-Prong NEMA L14-30 Generator Power Extension Cord (NEMA L14-30P to L14-30R) 692293 - The Home Depot
Amazon.com: RVGUARD 4 Prong 30 Amp 15 Foot Generator Extension Cord, NEMA L14-30P/L14-30R, 125/250V Up to 7500W 10 Gauge SJTW Generator Cord, ETL Listed : Automotive
Leisure Cords NEMA L14-30 4 Prong Locking 30 Amp Generator Extension Cord, 15 ft | eBay
Amazon.com: 20 Feet NEMA L14-30P/L14-30R Generator Extension Cords, 4 Prong Heavy Duty, 30 Amp,125/250V,Up to 7500W 10AWG Cable and The Cable UL Certification,Black : Patio, Lawn & Garden
parkworld 50 ft. 10/4 NEMA L14-30 Generator Extension Cord (NEMA L14-30P to L14-30R with Lighted) UL Listed 692293A - The Home Depot