Abacus Technical

Garage doors are not always straight forward to install and Abacus recommends that you use a recognised tradesperson to measure for and install your new door. This page is here to help you understand the size of a garage door, which is right for your property.

Up-and-over doors can be fitted to either a good quality timber frame or with an Abacus meatl frame and can be fitted either within the brickwork opening or behind it. All door sizes are based on the inside frame dimensions (i.e. If a door is said to be 7'0" (2134mm) wide, this measurement is actually the distance between the inside edges of the frame legs. The door itself is narrower and shorter than the inside frame sizes so that the door has the necessary clearance to pass through the opening. in all instances, quote the inner frame size, not the measurements of any existing door.

To fit an unframed Abacus garage door to an existing timber frame, ensure the frame is sound, square and secure and the timber is the recommended size of 76mm x 76mm (3" x 3"). The minimum headroom and sideroom required is 70mm and 57mm respectively for doors with canopy gear, 38mm and 70mm respectively ofr doors with tracked gear and 38mm and 60mm respectively for doors with Optimizer gear. To find the right size, measure timber to timber (A) and floor to timber (B)

To fit a framed Abacus grage door within the brick work opening, if the door is to be fitted with an Abacus metal frame, measure brickwork to brickwork (C) and floor to brickwork (D). For doors with a steel frame (Premiere steel, GRP, timber doors and Castle steel doors over 8' wide), subtract 160mm from the opening width and 80mm from the opening height to allow for the frame. For doors with a narrow fit aluminium frame (Castle steel doors up to 8' wide and special request 7066 and 7070 canopy doors in all ranges) subtract 130mm from the width and 80mm from the height.

To fit a framed Abacus garage door behind the brickwork opening, measure brickwork to brickwork (C) and inside floor to brickwork (D). Subtract 20mm from the opening width to allow for variations in the brickwork.

Click below for a table of brickwork opening sizes for common sized doors with an Abacus metal frame:
 

NOTES

Always measure from more than one point as brickwork or the timber frame may not be consistent.

Always ensure there is sufficient clearance in the garage for the door to be installed and operate fully.

 

1) The brickwork opening sizes for fitting an Abacus door in a metal frame 'within the brickwork opening' include a 5mm gap between each frame leg and the brickwork and a 10mm gap between the frame head and the brickwork

2) The brickwork opening sizes for fitting an Abacus door in a metal frame 'behind the brickwork opening' are based on the frame overlapping into the opening by 10mm on obth sides to allow for brickwork. The minimum amount of overlap is 2.5mm each side (steel frame) and 40mm each side (narrow fit aluminium frame)

ABACUS FRAME DIMENSIONS... Steel Frame:
Single sized doors: 75mm wide on the legs, 70mm high on the head and 53mm deep all round
Double sized doors: 75mm wide on the legs, 70mm high on the head. Available for all Premiere steel, GRP, timber doors and Castle steel doors (over 8' wide)

Narrow Fit Aluminium Frame: 60mm wide on the legs, 70mm high on the head and 48mm deep all round. Standard for Castle steel doors up 8' wide and available for special request 7066 and 7070 size canopy Premiere steel, GRP and timber doors.

All sizes are subject to manuafcturing tolerances