Move filter rack to the other end,add 4supplies and 1 double return,3-2†4x12 sleeves,2-10x8 patches and one 14x8patch Completed installation of (3) 4â€x12†supplies out from bottom of existing supply ductwork for the basement bath, and 2 rooms. Added (1) 4â€x12†sidewall supply off existing duct to the family room of the basement as well as a 30â€x6†low side wall return air. Reconfigured the return air drop ductwork to allow access to the filter from the front of the furnace now that there is a wall behind the furnace. We also drilled a 4†hole through the house and installed the customer provided vent hood for the basement exhaust fan. We left the 3 white supply registers but had to order the brown ones and will deliver them when we get them. Thank you for choosing Black-Haak. Please take a moment to fill out our online survey. Thanks, Craig.