This study aims to determine the most effective raft model to support the growth and production of Grand Rapids variety lettuce (Lactuca sativa L.) in a floating cultivation system in non-tidal swamplands. The research was conducted using a Randomized Block Design (RBD) with four raft model treatments: bamboo raft (R1), gallon raft (R2), mineral water bottle raft (R3), and organic swamp plant r…