Monessen brand products are known throughout the industry for their aesthetics, performance and convenience features. As a savvy consumer, you can feel good about making a smart purchase when you choose a Monessen product. It delivers the satisfaction of great performance for years to come. We are an environmentally conscious company. Our manufacturing facilities adhere to strict environmental guidelines for cleanliness and waste management. All vent free products are 99.9% efficient, thus helping the planet and saving your money.