9" Extension Ring NOW INCLUDED with Base TrapBurner

Two DPF Capacity Expansion FSX Filter Rack is an add-on accessory that allows you to perform a Stage 2 Thermal cleaning of two (2) standard size DPFs (17inches or shorter) at the same time. 

Part #79-10B136 - 35" Filter Rack - Triple your thermal cleaning process capacity when combined with the TrapBurner Kiln Extension Ring.

Pre-2016 Base Model Kit for TrapBurners:
Part #79-10B125 - Small Kit (4.5" Extension Ring & 31" Filter Rack)
Part #79-10B127 - Large Kit (4.5" & 9" Extension Rings with 39" Filter Rack)