M-D 36" Gray Door Sweep Insert is designed to effectively replace old and worn-out inserts in your existing Under Door Seal. Crafted from durable vinyl, this insert provides a reliable seal that helps protect your home from drafts, moisture, dust, and insects. It is compatible with both U-Shape and L-Shape Under Door Seals, making it a versatile choice for maintaining your door’s weatherproofing. For easier installation, using a soap and water solution is to help the insert slide into place smoothly. Model Number: 6304