Looking for replacement Polar-Aire roof vent lid ?

If you can't find a new lid, you could strengthen it. I used some fiberglass sheets and Elastomeric Room Seal on my escape hatch. 10 plus years later, it still hasn't leaked or cracked through. I put more Elastomeric on it 3 years ago, not because of leaks, but because it had gotten dark.

Bob in Calif.