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The #279 Smoke Spec is a spectacle kit (eyeglasses) designed for full facepiece respirator masks that have a single facepiece lens. The nylon frame securely attaches to the inner surface of the respirator's face piece lens using a rubber suction cup. The suction cup attachment allows the Smoke Spec insert to be quickly mounted in or removed from the respirator mask. The suction cup also allows for adjusting the (vertex) distance between the optical lens and the user's eyes. The #279 Smoke Spec complies with OSHA Industrial Standard 29CFR1910.134. The #279 Smoke Spec does not interfere with the face piece seal, cause visual distortion, or damage the face piece lens.
The #279 Smoke Spec insert mounts oval shaped lenses which can accommodate any optical lens power: single or bifocal vision or readers (magnifiers). If your eye prescription changes, simply replace the lenses. The #279 Smoke Spec kit does not include optical lenses. Optical lenses can be purchased from www.spectacle-inserts.com/optical-lenses or your local eye care professional.