Valterra A10-G30420Y 4 Prong 30 Amp Male X 20 Amp Female Generator Y Adapter
Furman ADP1520 - ADP1520 Adapter Cord 20 Amp Socket to 15 Amp Plug - 1 FT - Herman ProAV
AC WORKS 20-Amp 4-wire To 3-wire Grounding Single To Single Orange Basic Flexible Adapter in the Adapters & Splitters department at Lowes.com
conntek y1450520s nema 14-50 50-amp 125/250-volt rv/generator y-adapter plug to u.s. 15/20-amp female connectors - Walmart.com
5 20P FOR 5 20R, 20 Amp T Blade Male Plug for 15A / 20A, 5 20P FOR 5 15R NEMA 5 20 P Male for Nema 5 15 / 20R Female AC Adapter|International Plug Adaptor| - AliExpress
Southwire 090238802 Twist To Lock W Adapter 20 Amp (029892090234-1)
AC WORKS Plug Adapter 15 Amp Household Plug to 20 Amp T-Blade Female Outlet Adapter (NEMA 5-15P to 5-15/20R) XH515520
Conntek 30123, 20 to 15/20-Amp Generator Locking Adapter with NEMA L5-20P to 5-15/20R, Yellow | M1341993 - GLOBALindustrial.com
AC WORKS 20-Amp 4-wire To 3-wire Grounding Single To Single Orange Basic Elbow Adapter in the Adapters & Splitters department at Lowes.com
15A NEMA to 20A NEMA Power Adapter - Walmart.com
Smart Electrician® Black 15 Amp to 20 Amp T-Blade Plug Adapter at Menards®
Conntek® 30-Amp Turn Lock to 15/20-Amp Straight Blade Generator Adaptor at Menards®
Conntek 14826 5-20P to TT-30R 20 Amp Home Outlet to 30 Amp RV Pigtail Adapter | eBay