Magnetic Thermal Insulated Door Curtain, 36 x 78 Inch Winter Door Cover Curtain Size 40 x 80 Waterproof Thick Insulation Blanket with Visible Window Side Opening Gray

This magnetic door curtain adds a layer of insulation to standard interior doors, helping you keep cold air out and warm air in. It’s a good fit for renters or homeowners in colder regions who want a simple, non‑permanent solution.

You can hang it over a bedroom door to reduce drafts at night, or use it in a home office to maintain a consistent temperature while you work. The built‑in window lets you see through without removing the curtain, and the magnetic strip keeps it sealed.