The Western Optical Hot Box Frame Warmer can be cranked up to 400 degrees without the housing becoming hot.

This deluxe ophthalmic frame warmer is adjusted using the rheostat temperature control knob for different zyl mounting requirements.

Outside measurements are 12"x5"x8" while the non-stick inner pan measures 9"x2.75"x5".

Hot Box Frame Warmer pan is recessed and sealed to help prevent salt or glass bead spills.

*Does not include salt or glass beads