Therma-Tru’s line of 20-minute rated doors look very similar to other designs available, however the construction of these doors differs slightly. They still have a polyurethane foam core but it is fire-rated to withstand 20 minutes of fire exposure.
Along the lock side is a piece of full length blocking and additional blocking for panic and closure applications if necessary. The edges are made of laminated veneer lumber for increased rigidity and stability. The doors have a pass through hinge mortise.
FMF220
FCF808
FCF160
FCF100
SSF220
SSF200
SSF205
SSF960
SSF600
SSF160
SSF100
SSF1100
SSF120
SSF4800
969HD
978HD
1005HD
205HD
203HD
210HD
100
TS214
TS210
TS100