Houseables Generator Extension Cord, Electric Wire, 3 Prong, 30 Amp, 250 Volt, Single, Black, 25 Ft, All Rubber, 10 Gauge, Heavy Duty, L6-30, Commercial, Electrical Power Cable, with Locking Switch - - Amazon.com
Maximm Cable 30 ft Safety Extension Cord with Multiple Outlets Black 14/3 SJTW, 14 Gauge Heavy Duty Indoor/Outdoor Power Cords ETL - Walmart.com
Camco 25' Power Grip Heavy-Duty Outdoor 30-Amp Extension Cord for RV and Auto Allows for Additional Length to Reach Distant Power Outlets Built to Last 55191 - Walmart.com
Amazon.com: Camco 30' 15-Amp Extension Cord | Ideal for RV, Mobile Home and Household Use | Heavy-Duty (55142), Black : Automotive
AC WORKS 50ft NEMA L5-30 Cord 50-ft 10 / 3-Prong Indoor/Outdoor Soow Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com
30A 15FT RV Power Extension Cord TT30 (Safety Yellow), Black Grip Hand – Journeyman-Pro
TaliaPosy (55191) 25 PowerGrip Heavy-Duty Outdoor 30-Amp Extension Cord for RV and Auto | Allows for Additional Length to Reach Distant Power Outlets | Built to Last - Walmart.com