If you are a Glazing subcontractor with commercial projects in new construction, remodeling or upgrading for ADA code compliance, your entrances likely require aluminum or Herculite doors with electrified or architectural hardware. Knowles Door Check is the builders hardware firm you've been waiting to meet. Why?

Most builders hardware companies provide wood and hollow aluminum doors and frames for the interior, not the exterior, so why should they know about entrances? Knowles Door Check knows exterior aluminum doors inside and out.

You benefit from our relationships with all the major door manufacturers, cultivated over half a century in business, not to mention two decades focusing exclusively on exterior aluminum doors. We can verify specifications and supply hardware for a variety of advanced applications, including life safety, alarm security and handicap operation.