At Dennis Carpenters beginning with quality ingredients like EPDM Rubber is the secret to making quality weatherstripping products. EPDM stands for ethylene propylene diene monomer rubber, which is a type of synthetic rubber that is extremely durable and flexible. This type of rubber better resists drying and shrinking from the sun's harmful ultraviolet rays, unlike pure or inferior quality rubber that becomes brittle with temperature variance.  

Dennis Carpenters' attention to detail and use of quality raw materials ensures that you're getting a premium product that is the best on the market.