Several of the motor homes we've looked at had what looked like white, 4" round vents on the front face at the bottom of the couch. What are they for? They can't really be vents can they?
When they first started making slide outs the manufactures hadn't got their designs quite right and many of the RVs had their heater vents under the slide out floors when the slide outs were closed. It was a big problem when RVs were on the road. Now they are getting better. Most of the heat vents and return vents to the furnace are in the walls etc. They won't be affected if the slides are opened or closed. Those vents could be heat vents or return vents.