The B&G Versaduster measures 12.77" X 9.17" X 5.11".
It is recommended to use the B&G Versaduster with at least 20 PSI. You can purchase the Versaduster from us with or without the B&G Compressor.
We do sell parts for the B&G Versaduster. Please give us a call at 866-581-7378 and we will be happy to help you.
There is not another extension for the B&G Versaduster. The hose is a 40-foot recoiled hose, so you can reach several feet from where your compressor is kept. If you need something to use from the ground to dust under eaves, then we suggest the Dustick Duster which has a 21-foot reach. If you are going to climb up close to where you need to dust, then you could also just use a hand duster such as the B&G 1150.