The HO Winterization Hatch is designed specifically for use with GP-7 and GP-9 models. This detailed accessory features a square grill and is paired with 36-inch fans, providing realistic enhancements for model railroad layouts. Known for their quality, Athearn winterization hatches come in sets of three and include a plastic base accompanied by a finely crafted photo-etched grille. These hatches are not only functional but also improve the overall aesthetic of the locomotive.