This is Indicator Lens Rectangle Style White manufactured by Honeywell. The manufacturer part number is AML51-F10W.

Honeywell AML51-F10W Indicator Lens Rectangle Style, White

Manufacturer:

Honeywell

Manufacturer Part No:

AML51-F10W

Enrgtech Part No:

ET20166938

Warranty:

Manufacturer

£ 2.73

Checking for live stock

For Use With:

AML11, 21, 31 Switches And AML41 Indicators

Lens Shape:

Rectangle

Lens Colour:

White

AML Series Dimensions(Technical Reference)

AML51C10A/B/G/R/W/X/F10A/B/G/K/W/R/K Button Switch Data Sheet(Technical Reference)