Solid Core, also known as The Quiet Door®, reduces the transmission of sound by up to 50 percent when compared to a hollow-core door. A ProCore® door creates a private, peaceful, and quiet sanctuary in any room of the house. The Quiet Door® option is most often requested for home offices, bedrooms, playrooms, and home theaters. The door is also built to resist dents and dings. The solid-core materials used inside each ProCore® door affects its weight, as well as its ability to withstand impact and fire protection ratings. 20, 45, and 60-minute fire-rating options are available for most JELD-WEN panel designs. To confirm fire door requirements in your jurisdiction, always check with your local building code authority.