Westward 36RF99 Blacklight Bulb 50W U-Shape

What it is and who it is for

The Westward 36RF99 is a 50 watt U-shape blacklight bulb sold as a replacement lamp. It is intended for buyers who need a direct swap for a worn or broken UV tube in an existing fixture. The bulb measures 12-21/64 inches in length with a 2-1/8 inch width and depth. It is not for shoppers looking for a complete new lighting unit or a different wattage.

Practical limits of the standard interface

This bulb is designed to work with stock number 36RF97, so compatibility depends on that specific fixture. The U-shape geometry and the stated dimensions fix the physical fit, and the 50 watt rating fixes the electrical draw. Buyers must confirm their housing accepts those exact measurements before ordering. No other mounting standard or wattage is supported by this item.

What it replaces and when the jump is worth it

The 36RF99 replaces a spent 50 watt U-shape blacklight tube in the same fixture. The jump is worth it when the old lamp no longer emits sufficient UV output for insect attraction or curing tasks. Ordering a quantity of 500 or more makes the items non-returnable, so smaller orders allow verification of fit and performance first.