GERDA - European Steel Doors 

We introduce European steel burglar-proof doors for residential homes which fulfill and even exceed all mandatory requirements of standards applicable to external doors with higher burglary resistance.

European steel security doors are available in standard height of burglar-proof thermal break DUOTHERM and PERFOTHERM steel frames 81 3/4" and optional ALUTHERM insulated thermal break frame 82 1/8" in 5 standard sizes: from 34" to 44.5" width.

Sidelights are available in custom sizes fixed and operating variant. Fixed top transom is available in custom sizes.

Available Gerda Steel Door Configurations

GERDA STEEL DOOR MODELS

GERDA NTT REVO  burglar proof steel doors for residential home are the highest quality products, characterized by a modern design and excellent thermal insulation parameters.
They perfectly combine the best features of metal doors - a solid, stiff and durable structure, the highest level of security and energy efficiency, aesthetics with the individual character of modern doors for the most demanding customers.
The door sashes (leaves) are made of the highest quality materials, ensuring resistance to the rigors of everyday use and the effects of changing weather conditions.

NTT REVO 75 (Best energy efficiency)

passive doors with outstanding maximum energy saving while increasing the comfort of living. They allow you keeping energy inside the room, which leads to direct savings. NTT REVO 75 door is characterized by U-value coefficient, depending on the frame used, from 0.77 W/m2K using ALUTHERM thermal break aluminum frame and threshold  to 0.93 W/m2K using DUOTHERM steel and wood thermal break frame with gasket.

NTT REVO 60 (Best value)
energy saving doors have Ud = 0.87 W/m2K using ALUTHERM thermal break aluminum frame and threshold, and Ud = 1.0 W/m2K using DUOTHERM steel and wood thermal break frame with gasket.

TT OPTIMA TEMPO modern steel doors collection is characterized by very good parameters of thermal and acoustic insulation. We have achieved this thanks to the use of the patented PERFOTHERM steel frame, thickened sheet metal of the door sash skin and using soundproofing and thermal insulating materials. Thanks to modern stamping technology, decorative inserts made of stainless steel are flush with the leaf surface, which significantly improves the aesthetics of the door.

TT OPTIMA 60 (The widest selection of designs)
energy-saving door has Ud coefficient = 0.87 using the ALUTHERM thermal break aluminum frame and threshold, and Ud = 1.0 W / m2K using the DUOTHERM thermal break steel and wood frame with thermal perforation and compression seal.

TT OPTIMA 50 (Cost effective) 
insulated doors are characterized by Ud coefficient = 1.2 W / m2K. 
Steel PERFOTHERM® frame with thermal perforation, compression seal with three types of thresholds to choose from: steel threshold with a PVC seal; wooden threshold with a seal and PVC sub-sill; aluminum threshold with a seal and a sub-sill.

TT OPTIMA CLASSIC steel doors collection is characterized by very good parameters of thermal and acoustic insulation. We have achieved this thanks to the use of the patented PERFOTHERM steel frame, thickened sheet metal of the door sash skin and using soundproofing and thermal insulating materials. Classic and traditional mid-century (1960-1970) design doors still of high demand in Canad and USA now.

TT OPTIMA 60
energy-saving door has Ud coefficient = 0.87 using the ALUTHERM thermal break aluminum frame and threshold, and Ud = 1.0 W / m2K using the DUOTHERM thermal break steel and wood frame with thermal perforation and compression seal.

TT OPTIMA 50 
insulated doors are characterized by Ud coefficient = 1.2 W / m2K. 
Steel PERFOTHERM® frame with thermal perforation, compression seal with three types of thresholds to choose from: steel threshold with a PVC seal; wooden threshold with a seal and PVC sub-sill; aluminum threshold with a seal and a sub-sill.

TT OPTIMA DUO 60 - double-sash external door is a great alternative for people who are looking for wide entrance doors to their home. Duo doors combine aesthetics and functionality and available in modern, traditional and classic designs. Thanks to the use of the inactive sash, we have obtained a larger space, useful e.g. when carrying wider elements. Inactive sash can be installed both without and with glazing, additionally being a fashionable element in housing construction as a door sidelight.

TT OPTIMA DUO 60 door for people looking for doors with wide opening. 

Characteristics
- entrance doors to single- and multi-family buildings;
- steel sash 61 mm thick, filled with expanded carbon modified polystyrene;
- available in a set with PERFOTHERM® steel door frame and aluminum threshold;
- optional ALUTHERM OPTIMA aluminum frame for an extra charge;
- passive sash, full and glazed, sizes 30, 40, 50 (cm);
- doors available in 10 colors.

SECURE STEEL DOORS

7321 Victoria Park Ave., unit 20, 

Markham, ON L3R 2Z8, Canada​

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