For a 25-yard range using the GRC Rubber Berm Bullet Trap, the optimum length of the room will be 106’. This allows 15’ for the bullet trap + 75’ shooting distance + 4’ for the shooting stall depth + 12’ behind the shooting stall to the front wall for entry, shooting bags, and allows for optimum air flow for range ventilation. For shorter or longer shooting distances, add or subtract from the 75’. Standard lane size is 48” on-center of the shooting stalls. For example, an eight-lane bay will need to be 32’ wide from wall-to-wall. Lanes can certainly be larger or smaller depending on need and desires. When available, range owners may consider making at least one lane 60” wide to accommodate handicapped shooters who may require assistance. While 36” is the legal requirement for ADA regulations, 60” wide lanes have proven to better facilitate wheelchair bound shooters while maintaining a safe environment in which to handle and maneuver firearms.