#276XT Smoke Spec (does not include lenses) The #276XT Smoke Spec insert with extension bracket. Click here for the Smoke Spec Insert Guide for examples of compatible masks. Click here for insert specs. Instruction page. #276XT Smoke Spec quantity Add to cart Category: Uncategorized Related products Additional Anchor Bracket (does not include lenses) Add to cart #411TS Smoke SpecThe 411TS Smoke Spec can be used in the Scott AV2000 respirator mask. Attaches to mask via nut and bolt assembly. Click here for frame specs. $38.95 Add to cart