NREL Specifications for the installation of measures can be found in the Michigan Field Guide. Typical weatherization measures may include: Air sealing of openings in the home’s envelope to reduce air infiltration, attic/sidewall insulation installation, attic vent installation, determination of venting requirements, floor/foundation/Band Joist (BJ) insulation installation, Light Emitting Diode (LED) replacements, door and window replacements, smoke detector installation, duct sealing/repair, duct insulation installation, manufactured home belly insulation installation, and furnace and/or refrigerator replacement. Typical mechanical measure may include: Clean, tune, and repair for furnace and replace/install furnace filter. All measures are installed according to the specifications in the (NREL) Standard Work Specifications, and the Michigan Field Guide. The above mentioned is not an all-inclusive list of the measures that can be installed.