2501series " width: 120mm, neck: 60mm/ 63mm/ 70mm/ 76mm height: 130mm" sponge media, wiry cover, rubber base, the top treament: chromed, carbon, spray-painted, anodized air filter for various auto , extra lightweight and durablity; high effciencies; high dust holding capacity ; low pressure drop; cleanable and reusable, temperature range from -30 to 150; customized products are also avaliable on request ;