---
title: "Xingguang | 1200mm Tri-Proof Lights | LED Lighting"
description: "1200 mm is the drop-in size for a traditional 4 ft fluorescent batten, and the fixing centres usually line up. The real difference is the lens: an opal diffuser cuts glare and costs about 8% of the flux, a clear one is more efficient but harsh at low mounting heights. Food plants mostly take opal."
url: "https://www.xingguanglightingcn.com/en/spec/tri-proof-1200mm"
lang: "en"
updated: "2026-10-28"
markdown: "https://www.xingguanglightingcn.com/en/spec/tri-proof-1200mm.md"
---

[Home](https://www.xingguanglightingcn.com/en/) / [Selection by specification](https://www.xingguanglightingcn.com/en/spec/) / 1200mm Tri-Proof Lights

# 1200mm Tri-Proof Lights

1200 mm is the drop-in size for a traditional 4 ft fluorescent batten, and the fixing centres usually line up. The real difference is the lens: an opal diffuser cuts [glare](https://www.xingguanglightingcn.com/en/glossary#ugr) and costs about 8% of the flux, a clear one is more efficient but harsh at low mounting heights. Food plants mostly take opal.

[Get a Quote](https://wa.me/8613809877696)

## [Key parameters](https://www.xingguanglightingcn.com/en/glossary#ip-rating)

| Power | 36–40 W |
| --- | --- |
| Luminous flux | 4,000–5,000 lm |
| Dimensions | 1200 mm (4 ft) |
| Diffuser | PC 乳白 / 透明 |
| IP rating | IP65 |
| Impact rating | IK08 |
| Colour rendering | Ra>80 |

[Product family: Tri-Proof Lights](https://www.xingguanglightingcn.com/en/product-categories/tri-proof)

## The size is only proven at installation

This page covers 1200 mm (4 ft) at 36–40 W, 4,000–5,000 lm. Measure three things before ordering: the clear internal size of the grid, the finished ceiling level, and whether a beam or diffuser sits within the fixture border. Five millimetres anywhere in those three and it will not go in.

Within a room the size also sets the rhythm: lay the long edge along the direction people walk or work and the floor reads as one continuous band. Turn it across and walls and floor get alternating bright and dark stripes — average [illuminance](https://www.xingguanglightingcn.com/en/glossary#illuminance) passes, the room still feels wrong.

## Four things to verify before ordering

① Whether flux and efficacy are quoted for the complete fixture or the light source — a 10–15% difference that changes the fixture count. ② Whether colour temperature and CRI are measured or nominal values; mixed CCT within one batch is the most common arrival dispute. ③ Driver brand and model, plus its derating curve at high temperature — it is the only part that really sets life. ④ The mounting kit list: chain, bracket and anchors in the box, or the site stops for a day.

## Concepts on this page

[Tri-proof light](https://www.xingguanglightingcn.com/en/glossary#tri-proof)[IP rating](https://www.xingguanglightingcn.com/en/glossary#ip-rating)[Impact resistance](https://www.xingguanglightingcn.com/en/glossary#ik-rating)

![Tri-Proof Light TP-101](https://www.xingguanglightingcn.com/assets/img/prod-tp101.webp)

### [Tri-Proof Light TP-101](https://www.xingguanglightingcn.com/en/products/tri-proof-101)

Tri-proof

## Need a Lighting Plan?

Tell us your scenario, Jie Zhai will help you choose.

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[All specification pages](https://www.xingguanglightingcn.com/en/spec/)