Ok, one team member was genuine with assistance, another was willing to provide information as a support. A third team member was aloof and gave the impression of 'leave me I'm busy'.
Unfortunately, when I telephoned the customer service team, person I spoke to was vague, did not know anything about the product. I had a query regarding the cutout size to fit this unit.
I read...
Extremely easy order interface and fast shipping (within 24 hours). Haven't installed then both yet(1 push, 1 pull) but they are widely recommended as the best tool for the job.