ProTech II 120W XL vs 160W XL Lamps: Which Box Fits?

By Spray & Sun | Published: 2026-11-04

Category: Confronti

Compare ProTech II 120W XL and 160W XL R-UVA lamps on wattage, price, and 75-inch fit so you can pick the right box for your tanning bed.

Quick answer

Match the lamp wattage your tanning bed is rated for: choose the ProTech II 120W XL box (model 3178) for 120W systems and the ProTech II 160W XL box (model 3172) for 160W systems. Both are 75-inch R-UVA lamps sold in boxes of 12, so the deciding factor is your bed's specification, not the price difference.

Wattage is the deciding specification

The 120W and 160W XL lamps differ first by wattage, and that number must match what your tanning bed's ballast and socket are designed to handle. Installing a higher-wattage lamp than the bed is rated for can stress the equipment; installing a lower-wattage lamp may underperform. Check your bed's manual or the label on the existing lamps before ordering.

Both lamps are described as high-output R-UVA replacement lamps for salons and home units, so the choice is not about salon versus home use. It is about the electrical rating of your specific bed.

Price per box reflects the wattage gap

At catalog prices, the 160W XL box (model 3172) is listed at USD 197.40, while the 120W XL box (model 3178) is listed at USD 279.30. That price difference is a trade-off to weigh alongside wattage: the higher-output box is not automatically the more expensive one in this catalog, so confirm your bed's requirement rather than assuming a higher wattage costs more.

Both boxes contain 12 lamps, so the per-lamp cost difference follows the box price. Neither listing includes a stated lamp life figure, so plan replacement intervals around your bed manufacturer's guidance rather than a published hour rating.

The 75-inch length is shared, so measure before ordering

Both the 120W XL and 160W XL are 75-inch lamps. That length is common in larger horizontal beds, but it is not universal. Measure the lamp you are replacing end to end before you buy a box of 12, because a box is an expensive mistake if the length is wrong.

If your bed takes a shorter lamp, neither of these XL boxes is the right fit, and you should look at the non-XL ProTech II options instead.

Trade-offs to weigh before you buy

Wattage match vs. price: The 160W XL box is listed at a lower catalog price than the 120W XL box, but wattage must match your bed's rating. Do not choose the cheaper box if your bed requires 120W lamps. Confirm the wattage on your existing lamps or bed label before comparing prices.
Box of 12 vs. single lamps: Both options come only as boxes of 12 in the supplied catalog. If you need fewer lamps, a box may leave spares; if you are relamping a full bed, a box is the practical quantity. Count how many lamps your bed uses so you know whether one box covers it.
75-inch fit vs. other lengths: Both lamps are 75 inches, so they fit only beds that take that length. Measure before ordering; a shorter or longer bed needs a different lamp. Measure the old lamp end to end, not just the bed frame.

Product facts at a glance

ProSun ProTech II High Intensive R-UVA 160w XL Replacement Lamps (75″) #3172 – Box of 12: ProTech II High Intensive R-UVA 160W XL replacement lamps, 75 inches, sold as a box of 12 (model 3172). This is the box to choose when your bed is rated for 160W lamps and takes 75-inch tubes.
ProSun ProTech II High Intensive R-UVA 160w XL Replacement Lamps (75″) #3172 – Box of 12
ProSun ProTech II Intensive R-UVA 120w XL Replacement Lamps #3178– Box of 12: ProTech II Intensive R-UVA 120W XL replacement lamps, 75 inches, sold as a box of 12 (model 3178). This is the box to choose when your bed is rated for 120W lamps and takes 75-inch tubes.
ProSun ProTech II Intensive R-UVA 120w XL Replacement Lamps #3178– Box of 12

Which box is right for you?

Choose this if

Your tanning bed is rated for 160W lamps and uses 75-inch tubes: pick the 160W XL box (model 3172).
Your tanning bed is rated for 120W lamps and uses 75-inch tubes: pick the 120W XL box (model 3178).
You are relamping a full bed that takes 12 lamps of the matching wattage and length.

Do not choose this if

Your bed takes a lamp length other than 75 inches.
You need a wattage other than 120W or 160W.
You only need one or two lamps and do not want a full box of 12.