Wollensak Shutter TIB. Please read for shipping refund.

This is a Wollensak TIB Shutter. Appears to be in working order, but it actuates quickly and I don't know how to test it to operate it more slowly. Found in my father's house when we were downsizing and cleaning it out. We will refund any shipping overpayment (less a $2 handling fee to cover shipping materials). We ship via USPS within 3 days of payment at the lowest cost option. If multiple items are purchased, we will combine shipping to lower the cost further. Please ask any questions prior to bidding, as this is a no return sale, unless the item is significantly different than described. If you would like additional pictures or information, please let us know. We treat our buyers fairly, as we would like to be treated. Thank you for your interest.