I needed to order skylights and screws and washers to replace the 4 skylights on my 8x10 shed.  I called customer service and was able to order them and receive the replacement parts all within about 5 days.  And the cost was great: free (it was under the 10-year warranty).  Great service and great company. For some reason (heat, hail, not sure what), the plastic holding the screws into the skylignt panels was deteriorating and the screws and washers were falling onto the shed floor.  I have been using the shed for about 8 years.