Description: Fellowes 5224901 ( FEL5224901 ): Premium Binding Cover, Heavyweight, Black Opaque, Letter, 25 / Pk; Premium heavyweight polypropylene binding covers give your presentations a professional look & an elegant feel. Durable enough to withstand heavy handling. Use with any binding system (except thermal). Binding System(s) Compatibility: Comb; Wire; Size: 8 1/2 x 11; Grade: Premium Grade. .. FEL5224901 or FEL-5224901