VEVOR 2-Seat Patio Swing Chair, Outdoor Patio Swing with Adjustable Canopy, Porch Swing with Storage Bag and Rotating Tray, Oxford Fabric and Alloy Steel Frame, for Balcony, Backyard, Poolside, Black

This model has two separate seat frames, which you call double frame, single frame means the seats are not separated, and triple frame means the three seats are separated.