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Letter plate
These are the dimensions of the post flap supplied with the LS10. This post flap is shown in brass but is also available in textured black and polished or brushed chrome.
- A = 305mm, the overall width of the letterplate.
- B = 96mm, this dimension is the overall height of the letterplate.
- C = 57mm, the height of the letterplate orifice.
- D = 233mm, the width of the letterplate orifice
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Single wall and brick piers chute assembly
The single wall chute dimensions are shown below, the chute can accommodate wall thicknesses between 100mm and 112mm. The post flap above is not shown fitted, but when assembled it is attached to the front of the sleeve. This sleeve is used for all depths except double or cavity brick walls.
- H = 78mm, the overall height of the sleeve, the hole in the brickwork would need to be approximately 82mm.
- W = 248mm, this dimension is the overall width of the chute, the hole in the brickwork should be around 252mm.
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Double and Cavity wall chute assemblies
The double and cavity wall chute dimensions are shown below. The double wall chute can accommodate wall thicknesses from 200mm to 225mm, whilst the cavity wall chute fits wall thicknesses from 272mm to 297mm
- HF = 78mm, the overall height of the front of the sleeve, the hole in the front brickwork would need to be approximately 82mm high.
- HB = 113mm, the overall height of the gap at the rear, the hole in the rear brickwork should be cut to about 120mm
- W = 248mm, this dimension is the overall width of the chute, the width of the holes in the front and rear brickworks should be around 252mm.
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Collection Box
The collection is located within the cavity area when fitted into a brick wall or pier, for a double or cavity wall the box is located at the rear.
- A = 80mm, the height of the opening for a single wall depth chute.
- A = 115mm, the height of the opening for the double or cavity wall depth chute.
- B = 250mm, the width of the opening.
- D = 242mm, the overall depth of the standard size collection box, used for single, double or cavity brick walls. See below for details of sizes for cases to fit deeper walls or piers.
- H = 425mm, the overall height of the collection box.
- W = 295mm, this dimension is the overall width of the collection box.
- X = 286mm, the distance from the bottom of the letterbox casting to the bottom of the letter opening for a single wall depth chute.
- X = 251mm, the distance from the bottom of the letterbox casting to the bottom of the letter opening for a double or cavity wall depth chute.
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Collection Box Sleeve
Shown below are the dimensions of the inner sleeve of the standard size collection box.
- A = 402mm, the distance between the bottom face of the sleeve and the top of the apex, the overall height of the letterbox sleeve is taller as the sides extend below the bottom by 13mm making a total depth of 425mm. These extensions to the sides are generally bedded into the mortar when being built into a brick wall or pier.
- B = 383mm, the distance between the bottom of the sleeve to the top of the side before the apex begins. The apex of the sleeve rises 20mm from the side to the peak in the centre.
- C = 397mm, the dimension of the side of the sleeve from the very bottom to the lower point of the top apex.
- D = 230mm, the depth of the standard size sleeve. See below for details of sizes for cases to fit deeper walls or piers.
- E = 275mm, this is the width of the sleeve.
- F = 13mm, this dimension is the distance between the bottom of the sides and the floor of the mailbox sleeve.
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Rear Access Door
Below are the dimensions of the rear access door of the LS10 Stamford rear retrieval postbox.
- A = 180mm, this is the width of the rear retrieval doorway
- B = 185mm, this is the height of the rear door entrance
The diagonal distance of the letterbox opening is 257mm, easily big enough to remove A4 or large packages. A telephone directory sized package can be removed from the letterbox without needing to be bent in any way.
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Sleeves for deeper walls
The standard case size is designed for single, double or cavity walls and 1½ brick* walls or piers. In addition we have standard size cases for 2, 2½ and 3 brick* walls. For other depth walls or piers we will need to manufacture a sleeve to suit. To make the correct size we require two dimensions as shown below.
- A, the thickness of the brick (this is 102mm for a standard metric brick).
- B, the overall depth of the wall or pier from the outside faces.
* Based on a standard metric brick (215mm)
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