Walk-in greenhouse uses transparent polycarbonate panels that keep the interior warm while allowing light to reach plants for steady growth. A 6.5-ft tall frame provides standing room, and two sizes, 6 x 6 x 6.5 in and 6 x 8 x 6.5 in, offer options for different gardens. Rust-resistant aluminum bars reinforce the structure to support a 110-lb snow load. A roof vent with 3 adjustable angles regulates airflow, and integrated rain gutters guide water from the roof for drainage or collection.