Response to Yes this will fit your light. This bulb will fit either unit Hayward Astrolite SP058 Series Pentair Amerlite 784 Series

An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.

Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides. This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.