Just as fluorescent bulbs for the Spiderlite TD5 have grown in wattage, they have grown in size. This is a Westcott 50 Watt Cap for the Spiderlite TD5 Fixture. It snaps easily onto your fixture, protecting all your mounted bulbs for transport or storage.
In the Box
Westcott 50 Watt Protective Cap for Spiderlite TD5