size of a helipad

{"cid":"91198057","title":"White Color 5W 300cd Helipad Landing Direction Light IEC","imgUrl":"https:\/\/img.ismap.com\/nimg\/a2\/f0\/23be7eff9b40adb8aed99ea0e619-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Green Source","Model Number":"GS-HP\/L","Minimum Order Quantity":"1pc","Delivery Time":"3-10 days","Certification":"ISO\/SGS\/CE\/RoHS\/CB\/IEC","Place of Origin":"Guangdong,China","Payment Terms":"TT, Paypal, Visa","Supply Ability":"1000pcs\/week","Packaging Details":"Carton package","Emitting Color Optional colors":"White","Light Source Service life":"\u226520 years","Intensity":"\u2265300cd","Working Mode":"Steady burning","Average Power Consumption":"\u22645W","Supply Frequency":"50HZ\uff5e60HZ","Power Supply Optional voltage":"AC220V ,AC120V,DC24V","Type:":"Helipad Approach Landing Direction Light"}}

{"cid":"91177398","title":"AH-HP\/G Heliport Lights Outdoor Controller For Helipad Landing Lighting System","imgUrl":"https:\/\/img.ismap.com\/nimg\/c0\/8d\/e02fc4ebfeb0bebf68d6ed6d1508-200x200-1.jpg","attrs":{"Price":"$115.00 - $599.00\/ Piece","Brand Name":"Annhumg","Model Number":"AH-HP\/G","Minimum Order Quantity":"1","Delivery Time":"3-15days","Certification":"FAA","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"1000 Piece\/Pieces per Month","Packaging Details":"Plastic bag with paper carton.","Lamp Body Material":"Stainless Steel","Control capacity for heliport lighting":"\u22646","Max load":"5KW","Working way":"At night or all day"}}