
GreenGuard FQ350 Fanfold Underlayment
Economical fanfold XPS 0.3" thick with reflective facer on one side

The FQ250 has an extruded polystyrene foam (XPS) core with high-impact polystyrene facers on one side with a reflective facer on the other for added energy.

Economical fanfold XPS 0.3" thick with reflective facer on one side

Economical fanfold underlayment XPS 0.2" thick with crease-fold hinges