The AgroMax 6400K LED TEK Bulb is a 40‑watt LED retrofit designed for FT55/PL‑L55/TEK T5 fixtures using the four‑pin ANSI 2G11 base. It produces full‑spectrum 6400K white light suited to seedlings, clones, and vegetative growth. A built‑in heat sink and clear protective shell improve durability and thermal management. Compared with standard fluorescent BIAX lamps, published materials note up to 60% greater PPFD with roughly 25% less electricity and a rated lifetime of 50,000 hours. The lamp measures about 21.75 × 1.75 × 1.25 inches and weighs approximately 1 lb, fitting common two‑foot TEK housings. Coverage is fixture‑dependent; footprint is determined by the host reflector and number of lamps rather than the bulb alone, enabling a simple, no‑rewire upgrade for existing TEK‑style systems.