Low-Line PVC Cowl Ventilator, 8.4"H x 8"W from PLASTIMO
Offered with either a tall or a low-line cowl, these cowl/dorade box combos provide continuous ventilation without water intrusion. Dorade boxes have a water-sensitive valve which opens and closes automatically to let air in and keep water out. Flexible PVC cowls are safer than steel, yet strong enough to withstand kicks, snags and wallops. Cutout diameter is 3. 6".

4" Stainless-Steel Vent, 1000 cu. ft./hour, 4-3/4" Cutout Size from NICRO VENTILATION
Solar-powered ventilation 24/7 The improved design of Day/Night Plus Vents moves up to 1000 cubic feet per hour, freshening your cabin 24/7 by running on solar power during the day, while charging a small battery to run at night. The constant flow of air produced by these vents helps to keep boat interiors dry which extends the life of upholstery, electronics and metal components. Install a pair of these to create efficient cross ventilation. Draw: No external power (NiMH battery/solar cell) .

3" White Plastic Vent, 600 cu.ft./hour, 3-3/4" Cutout Size from NICRO VENTILATION
Solar-powered ventilation 24/7 The improved design of Day/Night Plus Vents moves up to 1000 cubic feet per hour, freshening your cabin 24/7 by running on solar power during the day, while charging a small battery to run at night. The constant flow of air produced by these vents helps to keep boat interiors dry which extends the life of upholstery, electronics and metal components. Install a pair of these to create efficient cross ventilation. Draw: No external power (NiMH battery/solar cell) .

3" Stainless-Steel Vent, 600 cu.ft./hour, 3-3/4" Cutout Size from NICRO VENTILATION
Solar-powered ventilation 24/7 The improved design of Day/Night Plus Vents moves up to 1000 cubic feet per hour, freshening your cabin 24/7 by running on solar power during the day, while charging a small battery to run at night. The constant flow of air produced by these vents helps to keep boat interiors dry which extends the life of upholstery, electronics and metal components. Install a pair of these to create efficient cross ventilation. Draw: No external power (NiMH battery/solar cell) .

4" White Plastic Vent, 1000 cu.ft./hour, 4-3/4" Cutout Size from NICRO VENTILATION
Solar-powered ventilation 24/7 The improved design of Day/Night Plus Vents moves up to 1000 cubic feet per hour, freshening your cabin 24/7 by running on solar power during the day, while charging a small battery to run at night. The constant flow of air produced by these vents helps to keep boat interiors dry which extends the life of upholstery, electronics and metal components. Install a pair of these to create efficient cross ventilation. Draw: No external power (NiMH battery/solar cell) .

Solar Mini Vent 1000 from NICRO VENTILATION
It has a 100% waterproof shut-off damper operated from below. Vent attaches directly to the deck without a Nicro deckplate. Solar powered exhaust ventilation during daylight - passive exhaust at night . No batteries or wiring required . Whisper-quiet fan operation . Durable white ABS construction . Shut-off damper to prevent water intrusion in rough seas . 2-year limited warranty and 5-year qualified warranty . Mounting hardware included. Optional Stainless steel cover available .