We have a couple brand new parts left over from a heating and air-conditioning project. We originally bought an installation kit from Defender because it was easier than figuring out and sourcing each part individually. Looking to sell these pieces we didn't need.
MSI Transition Box 8x4 x5 (we have two of those) - asking $20 each
Metal vent cover 8x4 (two of these as well) - asking $20 each
MSI hose "Y" 3x3x3 - asking $20
18 feet insulated ducting 5 inch - asking $50
No good sitting on the shelf, but maybe you could shave a little off the cost of your project.
MSI Transition Box 8x4 x5 (we have two of those) - asking $20 each
Metal vent cover 8x4 (two of these as well) - asking $20 each
MSI hose "Y" 3x3x3 - asking $20
18 feet insulated ducting 5 inch - asking $50
No good sitting on the shelf, but maybe you could shave a little off the cost of your project.