CTLAMP is a professional projector lamp manufacturer since 2008. We hope could provide high quality projector lamp with reasonable price. Part number: 310-5027 / 725-10032 / 730-11241 Compatible machine model: compatible with DELL 3300MP Warranty: 150-dayBrand New lamp with housing, top quality with high brightness, lamp life up to 2500 hours, QC test of all projector lamps.Warranty The projector lamps are completely covered under our 150-day warranty, which protects against any defective products.á We are committed to offering an easy and safe Projector Bulb buying experience that brings enjoyable shopping experience to all our customers.á Warranty does not cover: shipping costs, improper installation including damages incurred while attempting installation, any installation or labor costs, lamps damaged by TV projector malfunction, damage due to abuse, lightning or acts of nature, misuse, electrical stress or power surges, loss of use, lost profits.Warning To reduce the risk of personal injury, do not drop the lamp module. The bulb may shatter and cause injury if it is dropped. Customers? satisfaction is our top priority. If meeting any problems before or after purchasing, please contact me freely any time. It is our honor to serve you. CTLAMP is the only Authorized seller of CTLAMP Products, focusing on projector lamps for a long time. Well Customer Services, Buy with confidence