[1] Setting an aluminum storm window in place in front of the existing window. [2] Pouring a 30-pound bag of cellulose into the hopper of the blower. [3] The author's father cuts access holes in the wall with a hole saw. It's important that there are no obstructions between the studs ... so that the cellulose can completelyfillthe space. [4] An A-Frame window transporter (note the heavy-duty rubber snubbers). Storm windows and doors are a profitable sideline. [5] Faint outlines mark the holes through which the insulation was blown between the walls. [6] The author, blowing the cellulose insulation between the outer and inner walls of a house. [7] The author(wearing a dust-proof mask) introduces thefluffyinsulating material into a customer's attic.