Linear Actuator - Heavy Duty 12 Volt 8" Stroke Heavy duty linear actuator with 8 inch travel 225 lb max static load; 112 lb max dynamic load Overall Length: 12.75" (Min) to 20.75"(Max); Length Between Mounting Holes: 12" (Min) to 20"(Max) Perfect for operating tonneau covers, motorized trunks & hoods, amp racks and whatever else you may imagine! We have actuator wiring/switch kits available separately on Amazon! Linear actuators carry a "No DOA" warranty. Each actuator is QC tested before it leaves our facility. If you receive a defective actuator, you must contact us within 14 days of receipt. Actuators that are damaged due to improper installation, overloading or running over the duty cycle will not be covered under warranty