Security Boss Classic Guillotine Kennel DoorDescription Security Boss Classic Guillotine Kennel Door Built for Commerical Kennels The Classic Kennel Door is a HDPE panel that is reinforced on all sides with the Security Boss custom C channel. This reinforcement prevents warping, bending and binding that naturally occurs with all polypropylene, plastic or HDPE type kennel doors. The Classic Kennel Door will maintain its integrity due to the strong aluminum framing on all sides. All Security Boss