2022 Transit 350 HR Cargo AWD w all windows, AC and Coolant taps,
What's best practice for floor feedthrus and especially how to seal against bugs and air drafts? I feel like I'm winging it. See photo with two 1-1/2 inch ABS for grey drain and grey tank vent and an electrical feedthru for small cables for tank heaters, tank level sensors, Espar fuel pump. The electrical one is the standard conduit to box plastic fitting which does have a nice smooth interior, an extra one is sitting to the right. I guess I plan on using expanding foam to finish the job. Is there a source for larger dia grommets bigger than the 2 inch I found on Amazon? I'm hole saw drilling, sanding rough edges, painting with a polyurethane POR paint based on someone's suggestion somewhere and using his 2 screw holes to get a small amount of paint out at time and my suggestion a long wood stick cotton swab for a "paintbrush'.