LD155

T: +44 (0)1322 527 629

E: light@lightgraphix.co.uk

www.lightgraphix.co.uk

Page 10 of 11 | Data sheet issued: 22 May 2026

Installation requirements can vary but the minimum installation volume requirements must be adhered to. The volume of air or concrete is to ensure that the thermal perfomance of the

product is not comprimised and ensures the proper cooling of the LED. The minimum recess depth is 85mm. The volumes below are presented as L x W x H.

E3/F1 LED

Output current

Minimum void dimension

requirements (Lmm x Wmm

x Hmm)

Minimum volume of

concrete

cm³

Litre(s)

LD155-E3-350

300 x 300 x 180

18000cm³

18

LD155-E3-500

LD155-E3-700

400 x 400 x 200

32000cm³

32

N1 LED

Output current

Minimum void dimension

requirements (Lmm x Wmm

x Hmm)

Minimum volume of

concrete

cm³

Litre(s)

LD155-N1-350

300 x 300 x 180

18000cm³

18

LD155-N1-500

LD155-N1-700

400 x 400 x 200

32000cm³

32

E3/F1 LED

Output current

Minimum void dimension

requirements (Lmm x Wmm

x Hmm)

Minimum void volume

cm³

Litre(s)

LD155-E3-350

120 x 120 x 85

1,200cm³

1.2

LD155-E3-500

160 x 160 x 85

2,200cm³

2.2

LD155-E3-700

220 x 220 x 85

4,000cm³

4.0

N1 LED

Output current

Minimum void dimension

requirements (Lmm x Wmm

x Hmm)

Minimum void volume

cm³

Litre(s)

LD155-N1-350

150 x 150 x 85

1,900cm³

1.9

LD155-N1-500

180 x 180 x 85

2,700cm³

2.7

LD155-N1-700*

240 x 240 x 85

4,900cm³

4.9

* Max 25

°C ambient

W

L

H

INSTALLATION REQUIREMENTS

H

W

L

Mounting in surface with air void underneath - /SC Spring Clip and /485S Sleeve

If installing into a surface where there will be air around the base of the fitting,

these are the minimum space requirements around the fixture. For example, a floating

floor. The fixture can be installed into a solid floor but the minimum air volume

requirements need to be adhered to.

Mounting into solid concrete with the 485N Concrete Housing

Concrete is great for absorbing heat so the LD155 with the concrete housing performs

excellently. The below figures detail the minimum volume of concrete that should be used

around the housing. This is not an issue if installed into a concrete floor, but can be if the

housing is being used in lawn or soil applications where the housing is fixed at the base

with a small amount of concrete.

LD155-F1

/MSB

/WB

/WWB /OB

A

Distance from the

centre of the fitting

to the lit surface

125mm

B

Spacing for an

even wash

350mm 400mm 500mm 500mm

C

700mA Lit distance

5m

4m

2m

4m