Keep your home comfortable and energy-efficient with this 42-inch door stopper. Designed with dual-sided foam insulation, it effectively blocks wind, dust, insects, noise, and even light from passing through door gaps. The 1.6-inch thick foam cylinders create a snug fit under standard doors, providing an airtight seal that helps maintain room temperature and reduce energy bills.

Crafted with a durable fabric sleeve, it slides smoothly on both carpet and hard floors without scratching or snagging. Its double-sided design ensures protection on both sides of the door, making it ideal for bedrooms, living rooms, and even office doors. Easy to use—simply slide it under the door, no tools or adhesives required. It’s also lightweight, reusable, and machine washable for long-term use.

Perfect for all seasons, this under-door guard is a smart and simple solution for a more peaceful, insulated home.