
Cast-iron grilles and registers are available from Acorn Forged Iron in many styles. Click here for company info.

Architectural Grille custom designs and manufactures grilles using water-jet-cutting technology. Click here for company info.

A wide selection of grille patterns is offered by Architectural Grille in thicknesses ranging from ¼ to 1 in. Click here for company info.

Architectural Grille uses water-jet-cutting technology to create metal grilles in a variety of styles. Click here for company info.

Custom-perforated and linear-bar grilles from Architectural Grille are available in thicknesses ranging from ¼ to 1 in. Click here for company info.

Classic Grills fabricated these period-style grilles. Click here for company info.

Classic Grills fabricated these period-style grilles. Click here for company info.

These Arts and Crafts-style grilles are manufactured in hand-hammered copper by Craftsmen Hardware. Click here for company info.

Decorative registers and vents manufactured by Hamilton Sinkler are available in a wide selection of standard and custom sizes. Click here for company info.

This custom floor grate was designed and fabricated by Kayne & Son. Click here for company info.

This hand-forged fleur-de-lis window grill was fabricated by Kayne & Son. Click here for company info.

This 6-in. door grille, model #2176 from Maguire Iron, was handmade from malleable iron. Click here for company info.

The Groton model from Monarch Products is made of heavy-gauge steel combined with fine grille work. Click here for company info.

This solid-brass floor register from Signature Hardware has intertwining heart-shaped elements, and is available in six finishes. Click here for company info.

Available from Signature Hardware in large sizes for both wall and floor applications, this Victorian style register is made of solid brass materials. Click here for company info.

Reggio Register's 800 series of cast-iron grilles are handcrafted with a matte-black finish. Click here for company info.

Reggio Register offers more than 500 register and grille styles and sizes. Click here for company info.

Period-style grilles, louvers and registers can be obtained from Reggio Register in cast iron, brass and aluminum. Click here for company info.

Unico's small-duct, high-velocity HVAC system takes less than 1/4 the space of a traditional system, making it ideal for historic buildings. Click here for company info.