Gerda Optima 60
The 60 mm range, and the one with the widest choice of contemporary Tempo designs plus the traditional Classic panel doors.
- U-value, solid door
- 1.0 W/m²K
- Burglary resistance
- RC2 or RC3
- Designs
- 44
Supplied and installed by SteelR
The Gerda Collection
Gerda residential doors
SteelR supplies and installs the Gerda residential door collection: three ranges, 104 different designs (many are offered in more than one range), thirteen standard colours and woodgrains, and security rated to RC2 or RC3 under EN 1627.
Gerda has been operating since 1987, and these ranges are built at its plant in Starachowice, Poland. A Gerda door is selected from a catalogue. You pick a range for its thermal performance and locking, a design, a colour and the hardware. The door is then made to your opening in 10 mm steps, within a set range of widths and heights.
This page sets out the three ranges side by side, with every design shown on the range pages.

Three ranges
All three are made in the same widths and share the same colours, glass and hardware finishes. The number in each name is the thickness of the door leaf in millimetres.
The 60 mm range, and the one with the widest choice of contemporary Tempo designs plus the traditional Classic panel doors.
A 75 mm leaf with a thermal break, the full Gerda ZW 2000 locking set and the largest choice of designs in the collection.
U-values of 0.79 W/m²K solid and 0.9 W/m²K glazed, a choice of mortise or automatic locking, and heights up to 2400 mm in selected colours and designs.
Side by side
The three ranges share the same colours, glass and hardware finishes. They differ in leaf thickness, thermal performance and locking.
| Specification | Optima 60 | Thermo Premium 75 | Thermo Prime 75 |
|---|---|---|---|
| Door leaf | 60 mm | 75 mm with thermal break | 75 mm with thermal break |
| U-value, solid door | 1.0 W/m²K | 0.8 W/m²K | 0.79 W/m²K |
| U-value, glazed door | 1.3 W/m²K | 1.1 W/m²K | 0.9 W/m²K |
| Burglary resistance class | RC2 or RC3 | RC2 or RC3 | RC2 |
| Locking | Gerda ZW 2000 3-bolt main lock, ZW 500 3-bolt additional lock, 2-bolt auxiliary lock, vertical bolt | Gerda ZW 2000 3-bolt main lock, ZW 500 3-bolt additional lock, 2-bolt auxiliary lock, vertical bolt | 5-point mortise lock or 3-point automatic lock |
| Frame | Alutherm 60 aluminium | Alutherm 75 aluminium | Alutherm 75 aluminium |
| Rebate | 3 sides | 4 sides | 4 sides |
| Hinges | Adjustable in 2 planes, 3 hinge guards | Adjustable in 3 planes, 3 hinge guards | Adjustable in 3 planes, 3 hinge guards |
| Threshold | Low aluminium | Low aluminium with thermal break | Low aluminium with thermal break |
| Width | 840 to 1130 mm | 840 to 1130 mm | 840 to 1130 mm |
| Height | 1950 to 2200 mm | 1950 to 2200 mm | 1950 to 2200 mm, up to 2400 mm in selected colours and designs |
| Design series | Tempo, Classic, Elite 3D | Tempo, Quadro, Air Glass, Elite 3D | Tempo, Quadro, Air Glass, Elite 3D |
| Designs | 44 | 71 | 63 |
Figures are taken from the UK brochure for each range. RC classes are defined in EN 1627. The RC grade (2 or 3 under EN 1627) depends on door size and design. Gerda offers RC3 as a package on solid doors, so the grade is confirmed for your chosen design at quotation. Heights exclude the 27 mm sill and any extensions, and include the low threshold. Sizes are made in 10 mm increments; the available width and height depend on the design and colour. Thermo Prime 75 doors over 2200 mm are not tested for security or weather resistance.
Two different doors
They are different products for different briefs, and SteelR supplies both. One is selected from a catalogue and made in set sizes. The other is drawn and built for a single opening.
Design series
A series is a family of designs that share a style. Six designs from each are shown here.
38 designs · all three ranges
Flat contemporary leaves with stainless or black insert strips, slim glazed panels and long bar handles.

Milano 8
Ref NS1

Innsbruck
Ref NS7

Milano 4 B
Ref SNUB

Ryga
Ref ST8

Bergamo 2
Ref SOJ

Aspen 2
Ref TN7
43 designs · Thermo Premium 75 and Thermo Prime 75
Flush leaves divided by horizontal and vertical lines, many with square or full height glazing and contrasting colour blocks. The inside face is plain as standard.

Kassel 1
Ref KWT

Bamberg 1
Ref KWF

Dorfen B
Ref KWSB

Pasawa 1
Ref KWA

Regen 5
Ref KPM

Ulm 2
Ref KWK
11 designs · Thermo Premium 75 and Thermo Prime 75
Designs built around a tall glass panel set into the leaf. Air Glass doors are made at a fixed height of 2087 mm without a sill. The two Villach designs are the exception: they are made in a range of heights and need a width of 1030 to 1130 mm.

Salzburg
Ref AGA

Linz 2
Ref AGC

Graz 3 B
Ref AGGB

Villach
Ref AGH

Graz 1
Ref AGE

Linz 3
Ref AGD
6 designs · all three ranges
Panelled doors with raised decorative mouldings. The mouldings are thick aluminium profiles fixed to the leaf and finished in the leaf colour. The series includes the Hawkstone, a traditional four panel door with two glazed lights.

Hawkstone

Brig
Ref ELA

Olten
Ref ELB

Visp
Ref ELC

Trin
Ref ELD

Berno
Ref ELE
6 designs · Optima 60
Traditional pressed panel designs, including arched and oval panel layouts, with the same pattern on both faces as standard.

Werona
Ref W91

Barcelona
Ref W54

Olympia
Ref W23

Nicea 5
Ref WJ1

Wenecja
Ref W9N

Lizbona
Ref W24
Every design is shown with its name on the range pages: Optima 60 designs, Thermo Premium 75 designs, Thermo Prime 75 designs.
Finishes
Thirteen standard finishes: five plain colours and eight woodgrains. The tallest door available depends on the colour, because some finishes are only made up to a certain height.
| Colour and ref | Max height: Optima 60, Thermo Premium 75 | Max height: Thermo Prime 75 |
|---|---|---|
| White (FSB) | 2200 mm | 2400 mm |
| Steel Grey (FKZ) | 2100 mm | 2100 mm |
| Anthracite (FKG) | 2200 mm | 2400 mm |
| Dark Anthracite (FKF) | 2200 mm | 2400 mm |
| Black (FKC) | 2100 mm | 2100 mm |
| Alpine Walnut (FRR) | 2100 mm | 2100 mm |
| Mahogany (FMA) | 2087 mm | 2087 mm |
| Brazilian Walnut (FRB) | 2100 mm | 2100 mm |
| Light Walnut (FRP) | 2200 mm | 2400 mm |
| Golden Oak (FDE) | 2200 mm | 2400 mm |
| Winchester (FDW) | 2200 mm | 2400 mm |
| Turner Oak (FDT) | 2087 mm | 2087 mm |
| Light Wenge (FEJ) | 2100 mm | 2100 mm |
Also available: Black Matt, Silk Anthracite, Red, Pistachio, Light Blue, Light Green, Blue, Dark Green, Cobalt Blue, and the RAL colour range. A leaf in one colour with the frame in another can be ordered as standard. A door with a different colour inside and outside is available as an option.
Options
These options are common to all three ranges. Handle sets differ by range and are listed on each range page.
Questions
Gerda doors have an insulated leaf with a metal face over a timber inner frame, rather than a solid steel construction. Gerda describes the Optima leaf as steel, and it has an expanded graphite polystyrene core. Thermo Premium 75 uses the same core in a 75 mm leaf, and Thermo Prime 75 uses a PUR foam core. All three are made at Gerda's plant in Starachowice, Poland.
SteelR supplies and installs three Gerda residential door ranges: Optima 60, Thermo Premium 75 and Thermo Prime 75. Between them there are 104 different designs across the Tempo, Quadro, Air Glass, Elite 3D and Classic series. Many designs are offered in more than one range: Optima 60 has 44, Thermo Premium 75 has 71 and Thermo Prime 75 has 63.
In the UK range brochures Thermo Prime 75 has the lowest U-values: 0.79 W/m²K for a solid door and 0.9 W/m²K glazed. Thermo Premium 75 is 0.8 and 1.1 W/m²K. Optima 60 is 1.0 and 1.3 W/m²K. A lower figure means less heat lost through the door.
Optima 60 and Thermo Premium 75 are rated RC2 or RC3 under the European burglary resistance standard EN 1627, depending on door size and design. RC3 is a package that Gerda offers on solid doors. Thermo Prime 75 is rated RC2. For a higher rating, SteelR bespoke doors are certified to BS EN 1627 RC4 (single leaf, unglazed) as standard, with LPS 1175 SR3 and SR4 available.
A Gerda door is selected from a catalogue of designs and made in 10 mm steps within a set range of sizes, mostly 840 to 1130 mm wide and 1950 to 2200 mm high. A SteelR bespoke door is designed and made to measure for one opening, including double and arched doors, in any RAL colour and at higher security ratings.
Most designs are made from 840 to 1130 mm wide and 1950 to 2200 mm high, in 10 mm increments. Classic designs are 920 to 1030 mm wide and up to 2100 mm high. Most Air Glass designs have a fixed height of 2087 mm. Thermo Prime 75 can reach 2400 mm in selected colours and designs. Side lights and top lights are available for wider or taller openings.
There are thirteen standard finishes: White, Steel Grey, Anthracite, Dark Anthracite, Black, Alpine Walnut, Mahogany, Brazilian Walnut, Light Walnut, Golden Oak, Winchester, Turner Oak and Light Wenge. Black Matt, Silk Anthracite, Red, Pistachio, Light Blue, Light Green, Blue, Dark Green, Cobalt Blue and the RAL colour range are also available. The inside and outside can be different colours.
Yes. A tedee smart lock with its bridge can be added to all three ranges (tedee PRO on Thermo Prime 75). It lets you lock, unlock and check the door from a phone. A keypad with PIN and fingerprint entry is also available.
Lead time depends on the range, design and colour, and is confirmed in writing with your quotation.
Gerda residential doors · Supplied and installed by SteelR
Tell us which range and design you have in mind and we will call you back to talk through sizes, colours and options. There is no obligation. Supply and installation are by SteelR.