Inquiry (采购产品): Door/Ramp counterbalance Can you supply, from stock, a garage door type torsion spring to counter balance a 4' X 6'6" X 1 5/16" plywood door/ramp? Spring should mount on 1" heavy wall tubing with set screws. I am looking for a supplier for the tubing as well. Thank you, Mark Lansdell **** Hidden Message ***** Mark Lansdell 21225 Company: Preventive Maintenance Services E-mail: mhlansdell00@yahoo.com **** Hidden Message ***** mhlansdell00@yahoo.com
